How to add a progress bar to a shell script

Question

When scripting in bash or any other shell in  NIX  while running a command that will take more than a few seconds  a progress bar is needed   For example  copying a big file  opening a big tar file   What ways do you recommend to add progress bars to shell scripts

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Here is how it might look  Uploading a file                                                       100   137921   137921 bytes    Waiting for a job to complete                                                       50   15   30 seconds    Simple function that implements it  You can just copy-paste it to your script  It does not require anything else to work   PROGRESS BAR WIDTH 50    progress bar length in characters  draw progress bar         Arguments  current value  max value  unit of measurement  optional    local   value  1   local   max  2   local   unit   3 -       if unit is not supplied  do not display it      Calculate percentage   if       max  lt  1     then   max 1  fi    anti zero division protection   local   percentage     100 -     max 100 -    value 100       max         Rescale the bar according to the progress bar width   local   num bar        percentage    PROGRESS BAR WIDTH   100         Draw progress bar   printf       for b in   seq 1    num bar   do printf      done   for s in   seq 1      PROGRESS BAR WIDTH -    num bar      do printf      done   printf       percentage       value      max    unit  r      Usage example  Here  we upload a file and redraw the progress bar at each iteration  It does not matter what job is actually performed as long as we can get 2 values  max value and current value   In the example below the max value is file size and the current value is supplied by some function and is called uploaded bytes     Uploading a file file size 137921  while true  do     Get current value of uploaded bytes   uploaded bytes   some function that reports progress       Draw a progress bar   draw progress bar  uploaded bytes  file size  bytes       Check if we reached 100    if    uploaded bytes     file size    then break  fi   sleep 1    Wait before redrawing done   Go to the newline at the end of upload printf   n

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You can implement this by overwriting a line   Use  r to go back to the beginning of the line without writing  n to the terminal   Write  n when you re done to advance the line   Use echo -ne to    not print  n and to recognize escape sequences like  r    Here s a demo   echo -ne                             33   r  sleep 1 echo -ne                             66   r  sleep 1 echo -ne                             100   r  echo -ne   n    In a comment below  puk mentions this  fails  if you start with a long line and then want to write a short line  In this case  you ll need to overwrite the length of the long line  e g   with spaces

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To make a tar progress bar  tar xzvf pippo tgz  xargs -L 19  xargs -I  echo -n       Where  19  is the number of files in the tar divided the length of the intended progress bar  Example  the  tgz contains 140 files and you ll want a progress bar of 76      you can put -L 2   You ll need nothing else

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My solution displays the percentage of the tarball that is currently being uncompressed and written  I use this when writing out 2GB root filesystem images  You really need a progress bar for these things  What I do is use gzip --list to get the total uncompressed size of the tarball  From that I calculate the blocking-factor needed to divide the file into 100 parts  Finally  I print a checkpoint message for each block  For a 2GB file this gives about 10MB a block  If that is too big then you can divide the BLOCKING FACTOR by 10 or 100  but then it s harder to print pretty output in terms of a percentage   Assuming you are using Bash then you can use the following shell function  untar progress          TARBALL  1   BLOCKING FACTOR   gzip --list   TARBALL        perl -MPOSIX -ane      2  amp  amp  print ceil  F 1  50688     tar --blocking-factor   BLOCKING FACTOR  --checkpoint 1       --checkpoint-action  ttyout Wrote  u    r  -zxf   TARBALL

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for me easiest to use and best looking so far is command pv or bar like some guy already wrote  for example  need to make a backup of entire drive with dd  normally you use dd if   input drive path  of   output file path    with pv you can make it like this     dd if   input drive path    pv   dd of   output file path    and the progress goes directly to STDOUT as this       7 46GB 0 33 40  3 78MB s      lt   gt                                                 after it is done summary comes up      15654912 0 records in     15654912 0 records out     8015314944 bytes  8 0 GB  copied  2020 49 s  4 0 MB s

User · Answer

Here is how it might look  Uploading a file                                                       100   137921   137921 bytes    Waiting for a job to complete                                                       50   15   30 seconds    Simple function that implements it  You can just copy-paste it to your script  It does not require anything else to work   PROGRESS BAR WIDTH 50    progress bar length in characters  draw progress bar         Arguments  current value  max value  unit of measurement  optional    local   value  1   local   max  2   local   unit   3 -       if unit is not supplied  do not display it      Calculate percentage   if       max  lt  1     then   max 1  fi    anti zero division protection   local   percentage     100 -     max 100 -    value 100       max         Rescale the bar according to the progress bar width   local   num bar        percentage    PROGRESS BAR WIDTH   100         Draw progress bar   printf       for b in   seq 1    num bar   do printf      done   for s in   seq 1      PROGRESS BAR WIDTH -    num bar      do printf      done   printf       percentage       value      max    unit  r      Usage example  Here  we upload a file and redraw the progress bar at each iteration  It does not matter what job is actually performed as long as we can get 2 values  max value and current value   In the example below the max value is file size and the current value is supplied by some function and is called uploaded bytes     Uploading a file file size 137921  while true  do     Get current value of uploaded bytes   uploaded bytes   some function that reports progress       Draw a progress bar   draw progress bar  uploaded bytes  file size  bytes       Check if we reached 100    if    uploaded bytes     file size    then break  fi   sleep 1    Wait before redrawing done   Go to the newline at the end of upload printf   n

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To indicate progress of activity  try the following commands   while true  do sleep 0 25  amp  amp  echo -ne   r     amp  amp  sleep 0 25  amp  amp  echo -ne   r    amp  amp  sleep 0 25  amp  amp  echo -ne   r    amp  amp  sleep 0 25  amp  amp  echo -ne   r-   done    OR  while true  do sleep 0 25  amp  amp  echo -ne   rActivity       amp  amp  sleep 0 25  amp  amp  echo -ne   rActivity      amp  amp  sleep 0 25  amp  amp  echo -ne   rActivity      amp  amp  sleep 0 25  amp  amp  echo -ne   rActivity  -   done    OR  while true  do sleep 0 25  amp  amp  echo -ne   r   amp  amp  sleep 0 25  amp  amp  echo -ne   r gt    amp  amp  sleep 0 25  amp  amp  echo -ne   r gt  gt    amp  amp  sleep 0 25  amp  amp  echo -ne   r gt  gt  gt    sleep 0 25  amp  amp  echo -ne   r gt  gt  gt  gt    done    OR  while true  do sleep  25  amp  amp  echo -ne   r Active    amp  amp  sleep  25  amp  amp  echo -ne   r aCtive    amp  amp  sleep  25  amp  amp  echo -ne   r acTive    amp  amp  sleep  25  amp  amp  echo -ne   r actIve    amp  amp  sleep  25  amp  amp  echo -ne   r actiVe    amp  amp  sleep  25  amp  amp  echo -ne   r activE    done    One can use flags variables inside the while loop to check and display the value extent of progress

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Based on the work of Edouard Lopez  I created a progress bar that fits the size of the screen  whatever it is  Check it out     It s also posted on Git Hub      bin bash     Progress bar by Adriano Pinaffo   Available at https   github com adriano-pinaffo progressbar sh   Inspired on work by Edouard Lopez  https   github com edouard-lopez progress-bar sh    Version 1 0   Date April  28th 2017  function error     echo  Usage   0  SECONDS     case  1 in     1  echo  Pass one argument only      exit 1            2  echo  Parameter must be a number      exit 2               echo  Unknown error      exit 999   esac          -ne 1     amp  amp  error 1     1      0-9          error 2  duration   1  barsize     tput cols  - 7   unity     barsize    duration   increment     barsize  duration   skip     duration   duration- increment    curr bar 0 prev bar  for    elapsed 1  elapsed lt   duration  elapsed      do     Elapsed prev bar  curr bar   let curr bar   unity       increment -eq 0                   skip -eq 1     amp  amp                 elapsed   duration  increment    -eq 0     amp  amp  let curr bar                      elapsed  skip   -ne 0     amp  amp  let curr bar                elapsed -eq 1  amp  amp   increment -eq 1  amp  amp   skip -ne 1     amp  amp  let curr bar            barsize- curr bar   -eq 1     amp  amp  let curr bar         curr bar -lt  barsize       curr bar  barsize   for    filled 0  filled lt   curr bar  filled       do     printf       done      Remaining   for    remain  curr bar  remain lt  barsize  remain       do     printf       done      Percentage   printf     s          elapsed 100   duration        Return   sleep 1   printf   r  done printf   n  exit 0   Enjoy

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Most unix commands will not give you the sort of direct feedback from which you can do this  Some will give you output on stdout or stderr that you can use   For something like tar you could use the -v switch and pipe the output to a program that updates a small animation for each line it reads   As tar writes out a list of files it s unravelled the program can update the animation   To do a percent complete you would have to know the number of files and count the lines   cp doesn t give this sort of output as far as I know   To monitor the progress of cp you would have to monitor the source and destination files and watch the size of the destination   You could write a small c program using the stat  2  system call to get the file size   This would read the size of the source then poll the destination file and update a   complete bar based on the size of the file written to date

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bin bash tot   wc -c  proc    fd 255   awk      print  1    now     echo     100     awk    pos   print  2    lt   proc    fdinfo 255 -166     tot-166           now  now  now  now  now  now  now  now  now    output   0   12   25   37   50   62   75   87   100     note  if instead of 255 you put 1 you will monitor the standard in   with 2 the standard out  but you must modify the source to set  tot  to the projected output file size

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First execute the process to the background  then watch it s running status frequently that was running print the pattern and again check it status was running or not   Using while loop to watch the status of the process frequently   use the pgrep or any other command to watch and getting running status of a process   if using pgrep redirect the unnecessary output to  dev null as needed   Code   sleep 12 amp  while pgrep sleep  amp  gt   dev null do echo -en     sleep 0 5 done   This     will printed until sleep terminate this method used to implement the progress bar for progress time of program   you can also use this method to the commands to shell scripts for analyze it process time as visual   BUG   this pgrep method doesn t works in all situations unexpectedly the another process was running with same name  the while loop does not end   so getting the process running status by specify it s PID  using may the process can available with some commands    the command ps a will list all the process with id you need grep to find-out the pid of the specified process

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I did a pure shell version for an embedded system taking advantage of     usr bin dd s SIGUSR1 signal handling feature   Basically  if you send a  kill SIGUSR1   pid of running dd process    it ll output a summary of throughput speed and amount transferred   backgrounding dd and then querying it regularly for updates  and generating hash ticks like old-school ftp clients used to  Using  dev stdout as the destination for non-stdout friendly programs like scp   The end result allows you to take any file transfer operation and get progress update that looks like old-school FTP  hash  output where you d just get a hash mark for every X bytes   This is hardly production quality code  but you get the idea  I think it s cute    For what it s worth  the actual byte-count might not be reflected correctly in the number of hashes - you may have one more or less depending on rounding issues  Don t use this as part of a test script  it s just eye-candy  And  yes  I m aware this is terribly inefficient - it s a shell script and I make no apologies for it    Examples with wget  scp and tftp provided at the end  It should work with anything that has emits data  Make sure to use  dev stdout for programs that aren t stdout friendly      bin sh     Copyright  C  Nathan Ramella  nar progress-script remix net  2010    LGPLv2 license   If you use this  send me an email to say thanks and let me know what your product   is so I can tell all my friends I m a big man on the internet   progress filter              local START   date    s           local SIZE 1         local DURATION 1         local BLKSZ 51200         local TMPFILE  tmp tmpfile         local PROGRESS  tmp tftp progress         local BYTES LAST CYCLE 0         local BYTES THIS CYCLE 0          rm -f   PROGRESS           dd bs  BLKSZ of   TMPFILE  2 gt  amp 1                     grep --line-buffered -E     digit     bytes                      awk    print  1     gt  gt    PROGRESS   amp             Loop while the  dd  exists  It would be  more better  if we           actually looked for the specific child ID of the running            process by identifying which child process it was  If someone           else is running dd  it will mess things up             My PID handling is dumb  it assumes you only have one running dd on           the system  this should be fixed to just get the PID of the child           process from the shell           while     pidof dd  -gt 1    do                    PROTIP  You can sleep partial seconds  at least on linux                  sleep  5                        Force dd to update us on it s progress  which gets                   redirected to  PROGRESS file                                       dumb pid handling again                 pkill -USR1 dd                  local BYTES THIS CYCLE   tail -1  PROGRESS                  local XFER BLKS     BYTES THIS CYCLE-BYTES LAST CYCLE  BLKSZ                      Don t print anything unless we ve got 1 block or more                    This allows for stdin stderr interactions to occur                   without printing a hash erroneously                     Also makes it possible for you to background  scp                     but still use the  dev stdout trick  even  if scp                    inevitably  asks for a password                                       Fancy                   if    XFER BLKS -gt 0    then                         printf    0 s    seq 0  XFER BLKS                          BYTES LAST CYCLE  BYTES THIS CYCLE                 fi         done          local SIZE   stat -c  s   TMPFILE          local NOW   date    s            if    NOW -eq 0    then                 NOW 1         fi          local DURATION     NOW- START           local BYTES PER SECOND     SIZE   DURATION            local KBPS    SIZE DURATION 1024           local MD5   md5sum  TMPFILE   awk    print  1                This function prints out ugly stuff suitable for eval              rather than a pretty string  This makes it a bit more            flexible if you have a custom format  or dare I say  locale            printf   nDURATION  d nBYTES  d nKBPS  f nMD5  s n                 DURATION                SIZE                KBPS                MD5     Examples   echo  wget  wget -q -O  dev stdout http   www blah com somefile zip   progress filter  echo  tftp  tftp -l  dev stdout -g -r something firmware bin 192 168 1 1   progress filter  echo  scp  scp user 192 168 1 1   myfile tar  dev stdout   progress filter

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Many answers describe writing your own commands for printing out   r     some sort of progress msg  The problem sometimes is that printing out hundreds of these updates per second will slow down the process   However  if any of your processes produce output  eg 7z a -r newZipFile myFolder will output each filename as it compresses it  then a simpler  fast  painless and customisable solution exists   Install the python module tqdm     sudo pip install tqdm     now have fun   7z a -r -bd newZipFile myFolder   tqdm  gt  gt   dev null     if we know the expected total  we can have a bar    7z a -r -bd newZipFile myFolder   grep -o Compressing   tqdm --total   find myFolder -type f   wc -l   gt  gt   dev null   Help  tqdm -h  An example using more options     find   -name    py  -exec cat          tqdm --unit loc --unit scale True   wc -l   As a bonus you can also use tqdm to wrap iterables in python code   https   github com tqdm tqdm blob master README rst module

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APT style progress bar  Does not break normal output     EDIT  For an updated version check my github page  I was not satisfied with the responses on this question  What I was personally looking for was a fancy progress bar as is seen by APT   I had a look at the C source code for APT and decided to write my own equivalent for bash   This progress bar will stay nicely at the bottom of the terminal and will not interfere with any output sent to the terminal   Please do note that the bar is currently fixed at 100 characters wide  If you want scale it to the size of the terminal  this is fairly easy to accomplish as well  The updated version on my github page handles this well    I will post my script here  Usage example   source   progress bar sh echo  This is some output  setup scroll area sleep 1 echo  This is some output 2  draw progress bar 10 sleep 1 echo  This is some output 3  draw progress bar 50 sleep 1 echo  This is some output 4  draw progress bar 90 sleep 1 echo  This is some output 5  destroy scroll area   The script  I strongly recommend the version on my github instead       bin bash    This code was inspired by the open source C code of the APT progress bar   http   bazaar launchpad net  ubuntu-branches ubuntu trusty apt trusty view head  apt-pkg install-progress cc L233      Usage    Source this script   setup scroll area   draw progress bar 10   draw progress bar 90   destroy scroll area     CODE SAVE CURSOR   033 s  CODE RESTORE CURSOR   033 u  CODE CURSOR IN SCROLL AREA   033 1A  COLOR FG   e 30m  COLOR BG   e 42m  RESTORE FG   e 39m  RESTORE BG   e 49m   function setup scroll area         lines   tput lines      let lines  lines-1       Scroll down a bit to avoid visual glitch when the screen area shrinks by one row     echo -en   n         Save cursor     echo -en   CODE SAVE CURSOR        Set scroll region  this will place the cursor in the top left      echo -en   033 0   lines r         Restore cursor but ensure its inside the scrolling area     echo -en   CODE RESTORE CURSOR      echo -en   CODE CURSOR IN SCROLL AREA         Start empty progress bar     draw progress bar 0    function destroy scroll area         lines   tput lines        Save cursor     echo -en   CODE SAVE CURSOR        Set scroll region  this will place the cursor in the top left      echo -en   033 0   lines r         Restore cursor but ensure its inside the scrolling area     echo -en   CODE RESTORE CURSOR      echo -en   CODE CURSOR IN SCROLL AREA         We are done so clear the scroll bar     clear progress bar        Scroll down a bit to avoid visual glitch when the screen area grows by one row     echo -en   n n     function draw progress bar         percentage  1     lines   tput lines      let lines  lines       Save cursor     echo -en   CODE SAVE CURSOR         Move cursor position to last row     echo -en   033   lines  0f         Clear progress bar     tput el        Draw progress bar     print bar text  percentage        Restore cursor position     echo -en   CODE RESTORE CURSOR     function clear progress bar         lines   tput lines      let lines  lines       Save cursor     echo -en   CODE SAVE CURSOR         Move cursor position to last row     echo -en   033   lines  0f         clear progress bar     tput el        Restore cursor position     echo -en   CODE RESTORE CURSOR     function print bar text         local percentage  1        Prepare progress bar     let remainder 100- percentage     progress bar   echo -ne      echo -en    COLOR FG   COLOR BG    printf new      percentage  echo -en    RESTORE FG   RESTORE BG    printf new      remainder  echo -ne              Print progress bar     if    1 -gt 99       then         echo -ne    progress bar       else         echo -ne    progress bar       fi    printf new         str  1     num  2     v   printf   -  num s    str       echo -ne    v     str

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Many answers describe writing your own commands for printing out   r     some sort of progress msg  The problem sometimes is that printing out hundreds of these updates per second will slow down the process   However  if any of your processes produce output  eg 7z a -r newZipFile myFolder will output each filename as it compresses it  then a simpler  fast  painless and customisable solution exists   Install the python module tqdm     sudo pip install tqdm     now have fun   7z a -r -bd newZipFile myFolder   tqdm  gt  gt   dev null     if we know the expected total  we can have a bar    7z a -r -bd newZipFile myFolder   grep -o Compressing   tqdm --total   find myFolder -type f   wc -l   gt  gt   dev null   Help  tqdm -h  An example using more options     find   -name    py  -exec cat          tqdm --unit loc --unit scale True   wc -l   As a bonus you can also use tqdm to wrap iterables in python code   https   github com tqdm tqdm blob master README rst module

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You may also be interested in how to do a spinner   Can I do a spinner in Bash      Sure   i 1 sp   -    echo -n     while true do     printf   b  sp i      sp  1   done       Each time the loop iterates  it displays the next character in the sp   string  wrapping around as it reaches the end   i is the position of   the current character to display and    sp  is the length of the sp   string        The  b string is replaced by a  backspace  character  Alternatively    you could play with  r to go back to the beginning of the line       If you want it to slow down  put a sleep command inside the loop    after the printf        A POSIX equivalent would be   sp   -    printf     while true  do     printf   b  1s    sp      sp   sp     sp      done       If you already have a loop which does a lot of work  you can call the   following function at the beginning of each iteration to update the   spinner   sp   -    sc 0 spin        printf   b  sp sc   1        sc     sp     amp  amp  sc 0   endspin        printf   r s n          until work done  do    spin    some work     done endspin

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To make a tar progress bar  tar xzvf pippo tgz  xargs -L 19  xargs -I  echo -n       Where  19  is the number of files in the tar divided the length of the intended progress bar  Example  the  tgz contains 140 files and you ll want a progress bar of 76      you can put -L 2   You ll need nothing else

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This lets you visualize that a command is still executing   while   do echo -n   sleep 1 done  amp  trap  kill     EXIT   Die with parent if we die prematurely tar zxf packages tar gz    or any other command here kill     amp  amp  trap     EXIT  Kill the loop and unset the trap or else the pid might get reassigned and we might end up killing a completely different process   This will create an infinite while loop that executes in the background and echoes a     every second  This will display   in the shell  Run the tar command or any a command you want  When that command finishes executing then kill the last job running in the background - which is the infinite while loop

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You can implement this by overwriting a line   Use  r to go back to the beginning of the line without writing  n to the terminal   Write  n when you re done to advance the line   Use echo -ne to    not print  n and to recognize escape sequences like  r    Here s a demo   echo -ne                             33   r  sleep 1 echo -ne                             66   r  sleep 1 echo -ne                             100   r  echo -ne   n    In a comment below  puk mentions this  fails  if you start with a long line and then want to write a short line  In this case  you ll need to overwrite the length of the long line  e g   with spaces

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This is a psychedelic progressbar for bash scripting by nExace  It can be called from command line as    progressbar x y  where  x  is a time in seconds and  y  is a message associated with that portion of the progress   The inner progressbar   function itself is good standalone as well if you want other portions of your script to control the progressbar  For instance  sending  progressbar 10  Creating directory tree    will display                                                    10   Creating directory tree   Of course it will be nicely psychedelic though        bin bash  if        -eq 0    then echo  x is   time in seconds   and z is   message     echo  Usage  progressbar x z   exit  fi progressbar             local loca  1  local loca2  2          declare -a bgcolors  declare -a fgcolors          for i in  40  46   100  106   do                 bgcolors     i           done         for i in  30  36   90  96   do                 fgcolors     i           done         local u     50 - loca             local y  local t          local z  z   printf    s    u            local w     loca   2             local bouncer   oO  Oo            for   i 0 i lt loca i      do                 t    bouncer   i    bouncer    1                   bgcolor    E   bgcolors RANDOM   14  m   033 m                  y    bgcolor           done         fgcolor    E   fgcolors RANDOM   14  m          echo -ne    fgcolor t y z fgcolor t   E 96m   E 36m w   E 96m   E 92m  fgcolor loca2  033 m r     timeprogress             local loca   1   local loca2   2           loca   bc -l  lt  lt  lt  scale 2    loca 50           for i in  1  50   do                 progressbar   i    loca2                   sleep   loca           done         printf   n     timeprogress   1    2

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To indicate progress of activity  try the following commands   while true  do sleep 0 25  amp  amp  echo -ne   r     amp  amp  sleep 0 25  amp  amp  echo -ne   r    amp  amp  sleep 0 25  amp  amp  echo -ne   r    amp  amp  sleep 0 25  amp  amp  echo -ne   r-   done    OR  while true  do sleep 0 25  amp  amp  echo -ne   rActivity       amp  amp  sleep 0 25  amp  amp  echo -ne   rActivity      amp  amp  sleep 0 25  amp  amp  echo -ne   rActivity      amp  amp  sleep 0 25  amp  amp  echo -ne   rActivity  -   done    OR  while true  do sleep 0 25  amp  amp  echo -ne   r   amp  amp  sleep 0 25  amp  amp  echo -ne   r gt    amp  amp  sleep 0 25  amp  amp  echo -ne   r gt  gt    amp  amp  sleep 0 25  amp  amp  echo -ne   r gt  gt  gt    sleep 0 25  amp  amp  echo -ne   r gt  gt  gt  gt    done    OR  while true  do sleep  25  amp  amp  echo -ne   r Active    amp  amp  sleep  25  amp  amp  echo -ne   r aCtive    amp  amp  sleep  25  amp  amp  echo -ne   r acTive    amp  amp  sleep  25  amp  amp  echo -ne   r actIve    amp  amp  sleep  25  amp  amp  echo -ne   r actiVe    amp  amp  sleep  25  amp  amp  echo -ne   r activE    done    One can use flags variables inside the while loop to check and display the value extent of progress

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I used an answer from Creating string of repeated characters in shell script for char repeating  I have two relatively small bash versions for scripts that need to display progress bar  for example  a loop that goes through many files  but not useful for big tar files or copy operations   The faster one consists of two functions  one to prepare the strings for bar display   preparebar        1 - bar length    2 - bar char     barlen  1     barspaces   printf    s    1       barchars   printf    s    1    tr       2       and one to display a progress bar   progressbar        1 - number  -1 for clearing the bar     2 - max number     if    1 -eq -1    then         printf   r   barspaces r      else         barch     1 barlen  2           barsp    barlen-barch           printf   r     barch s    barsp s  r    barchars    barspaces      fi     It could be used as   preparebar 50       which means prepare strings for bar with 50     characters  and after that   progressbar 35 80   will display the number of     characters that corresponds to 35 80 ratio                                                          Be aware that function displays the bar on the same line over and over until you  or some other program  prints a newline  If you put -1 as first parameter  the bar would be erased   progressbar -1 80   The slower version is all in one function   progressbar        1 - number    2 - max number    3 - number of     characters     if    1 -eq -1    then         printf   r    s r    3      else         i     1  3  2           j     3-i           printf   r   s    i    tr                 printf    s  r    j      fi     and it can be used as  the same example as above    progressbar 35 80 50   If you need progressbar on stderr  just add  gt  amp 2 at the end of each printf command

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It may be achieved in a pretty simple way   iterate from 0 to 100 with for loop sleep every step for 25ms  0 25 second  append to the  bar variable another   sign to make the progress bar wider echo progress bar and percentage   r cleans line and returns to the beginning of the line  -ne makes echo doesn t add newline at the end and parses  r special character   function progress       bar        for    x 0  x  lt   100  x       do         sleep 0 25         bar  quot   bar   quot          echo -ne  quot  bar   x   r quot      done     echo -e  quot  n quot       progress  gt             10    here  after 2 5 seconds    progress  gt                                 30    here  after 7 5 seconds  COLORED PROGRESS BAR function progress       bar        for    x 0  x  lt   100  x       do         sleep 0 05         bar  quot   bar   quot           echo -ne  quot  r quot          echo -ne  quot  e 43m bar e 0m quot           local left  quot     100 -  x    quot          printf  quot     left s quot          echo -n  quot   x   quot      done     echo -e  quot  n quot     To make a progress bar colorful  you can use formatting escape sequence - here the progress bar is yellow   e 43m  then we reset custom settings with  e 0m  otherwise it would affect further input even when the progress bar is done

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You may also be interested in how to do a spinner   Can I do a spinner in Bash      Sure   i 1 sp   -    echo -n     while true do     printf   b  sp i      sp  1   done       Each time the loop iterates  it displays the next character in the sp   string  wrapping around as it reaches the end   i is the position of   the current character to display and    sp  is the length of the sp   string        The  b string is replaced by a  backspace  character  Alternatively    you could play with  r to go back to the beginning of the line       If you want it to slow down  put a sleep command inside the loop    after the printf        A POSIX equivalent would be   sp   -    printf     while true  do     printf   b  1s    sp      sp   sp     sp      done       If you already have a loop which does a lot of work  you can call the   following function at the beginning of each iteration to update the   spinner   sp   -    sc 0 spin        printf   b  sp sc   1        sc     sp     amp  amp  sc 0   endspin        printf   r s n          until work done  do    spin    some work     done endspin

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I wanted to track progress based on the number of lines a command output against a target number of lines from a previous run      bin bash function lines     local file  1   local default  2   if    -f  file     then     wc -l  file   awk   print  1      else     echo  default   fi    function bar     local items  1   local total  2   local size  3   percent     items  size  total    size     left     size- percent     chars   local s   printf     percent s    echo    s           echo -ne    chars gt      printf     left s    echo -ne    r     function clearbar     local size  1   printf      size s      echo -ne   r     function progress     local pid  1   local total  2   local file  3    bar 0 100 50   while       ps a   awk   print  1     grep  pid       do     bar   lines  file 0   total 50     sleep 1   done   clearbar 50   wait  pid   return        Then use it like this   target   lines build log 1000   mvn clean install  gt  build log 2 gt  amp 1   amp  progress     target build log   It outputs a progress bar that looks something like this                                                    gt        The bar grows as the number of lines output reaches the target  If the number of lines exceeds the target  the bar starts over  hopefully the target is good    BTW  I m using bash on Mac OSX  I based this code on a spinner from mariascio

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bin bash  function progress bar         bar        total 10        -z  1     amp  amp  input 0    input   1      x         for i in  seq 1 10   do         if    i -le  input    then             bar  bar x         else             bar   bar           fi     done      pct    200  input  total   2   100  input  total       pct     input 10       echo -ne  Progress       bar       pct     r          sleep 1     if    input -eq 10    then         echo -ne   n      fi      could create a function that draws this on a scale say 1-10 for the number of bars    progress bar 1 echo  doing something      progress bar 2 echo  doing something      progress bar 3 echo  doing something      progress bar 8 echo  doing something      progress bar 10

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Flexible version with randomized colors  a string to manipulate and date   function spinner       local PID   1    local str    2 -Processing      local delay  0 1      tput civis    hide cursor   while   kill -0  PID 2 gt  dev null       do       printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S           str          sleep   delay        printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S           str          sleep   delay        printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S           str          sleep   delay    done   printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S               Done                sleep   delay      tput cnorm    restore cursor    return 0     Usage     your long running proccess pushed to the background sleep 20  amp     spinner capture-previous-proccess-id string spinner     Working     output example    04 06 2020 03 22 24        Seeding

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Using suggestions listed above  I decided to implement my own progress bar       usr bin env bash  main       for    i   0  i  lt   100  i  i   1    do     progress bar   i      sleep 0 1    done   progress bar  done    exit 0    progress bar       if     1      done     then     spinner  X      percent done  100      progress message  Done       new line   n    else     spinner   -        percent done    1 -0       progress message   percent done      fi    percent none      100 -  percent done           percent done  -gt 0    amp  amp  local done bar    printf     0s    seq -s     1  percent done          percent none  -gt 0    amp  amp  local none bar    printf     0s    seq -s     1  percent none         print the progress bar to the screen   printf   r Progress    s s   s  s  new line           done bar          none bar           spinner x      spinner  1           progress message     main

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Some posts have showed how to display the command s progress   In order to calculate it  you ll need to see how much you ve progressed   On BSD systems some commands  such as dd 1    accept a SIGINFO signal  and will report their progress   On Linux systems some commands will respond similarly to SIGUSR1   If this facility is available  you can pipe your input through dd to monitor the number of bytes processed   Alternatively  you can use lsof to obtain the offset of the file s read pointer  and thereby calculate the progress   I ve written a command  named pmonitor  that displays the progress of processing a specified process or file   With it you can do things  such as the following     pmonitor -c gzip  home dds data mysql-2015-04-01 sql gz 58 06    An earlier version of Linux and FreeBSD shell scripts appears on my blog

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This is only applicable using gnome zenity   Zenity provides a great native interface to bash scripts  https   help gnome org users zenity stable   From Zenity Progress Bar  Example      bin sh   echo  10    sleep 1 echo    Updating mail logs    sleep 1 echo  20    sleep 1 echo    Resetting cron jobs    sleep 1 echo  50    sleep 1 echo  This line will just be ignored    sleep 1 echo  75    sleep 1 echo    Rebooting system    sleep 1 echo  100    sleep 1     zenity --progress     --title  Update System Logs      --text  Scanning mail logs         --percentage 0  if          -1     then         zenity --error             --text  Update canceled   fi

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I would also like to contribute my own progress bar  It achieves sub-character precision by using Half unicode blocks    Code is included

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Some posts have showed how to display the command s progress   In order to calculate it  you ll need to see how much you ve progressed   On BSD systems some commands  such as dd 1    accept a SIGINFO signal  and will report their progress   On Linux systems some commands will respond similarly to SIGUSR1   If this facility is available  you can pipe your input through dd to monitor the number of bytes processed   Alternatively  you can use lsof to obtain the offset of the file s read pointer  and thereby calculate the progress   I ve written a command  named pmonitor  that displays the progress of processing a specified process or file   With it you can do things  such as the following     pmonitor -c gzip  home dds data mysql-2015-04-01 sql gz 58 06    An earlier version of Linux and FreeBSD shell scripts appears on my blog

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I had the same thing to do today and based on Diomidis answer  here is how I did it  linux debian 6 0 7   Maybe  that could help you       bin bash  echo  getting script inode  inode  ls -i   script sh   cut -d    -f1  echo  inode  echo  getting the script size  size  cat script sh   wc -c  echo  size  echo  executing script    script sh  amp  pid    echo  child pid    pid   while true  do         let offset  lsof -o0 -o -p  pid   grep  inode   awk -F      print  7     cut -d t  -f 2          let percent 100  offset  size         echo -ne    percent   r  done

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Some posts have showed how to display the command s progress   In order to calculate it  you ll need to see how much you ve progressed   On BSD systems some commands  such as dd 1    accept a SIGINFO signal  and will report their progress   On Linux systems some commands will respond similarly to SIGUSR1   If this facility is available  you can pipe your input through dd to monitor the number of bytes processed   Alternatively  you can use lsof to obtain the offset of the file s read pointer  and thereby calculate the progress   I ve written a command  named pmonitor  that displays the progress of processing a specified process or file   With it you can do things  such as the following     pmonitor -c gzip  home dds data mysql-2015-04-01 sql gz 58 06    An earlier version of Linux and FreeBSD shell scripts appears on my blog

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I prefer to use dialog with the --gauge param  Is used very often in  deb package installations and other basic configuration stuff of many distros  So you don t need to reinvent the wheel    again  Just put an int value from 1 to 100  stdin  One basic and silly example   for a in  1  100   do sleep  1s  echo  a  dialog --gauge  waiting  7 30  done   I have this  bin Wait file  with chmod u x perms  for cooking purposes  P      bin bash INIT   bin date   s  NOW  INIT FUTURE   bin date -d   1    s     FUTURE -a  FUTURE -eq  FUTURE      exit DIFF  echo   FUTURE -  INIT  bc -l   while    INIT -le  FUTURE -a  NOW -lt  FUTURE    do     NOW   bin date   s      STEP  echo   NOW -  INIT  bc -l      SLEFT  echo   FUTURE -  NOW  bc -l      MLEFT  echo  scale 2  SLEFT 60  bc -l      TEXT   SLEFT seconds left   MLEFT minutes        TITLE  Waiting  1   2      sleep 1s     PTG  echo  scale 0  STEP   100    DIFF  bc -l      echo  PTG  dialog --title   TITLE  --gauge   TEXT  7 72 done  if     2           then msg  Espera terminada   1  audio  Listo   else msg  2 audio  2 fi    usr bin notify-send --icon stock appointment-reminder-excl   msg  espeak -v spanish   audio    So I can put   Wait  34 min   warm up the oven   or   Wait  dec 31   happy new year

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I needed a progress bar for iterating over the lines in a csv file  Was able to adapt cprn s code into something useful for me  BAR                                  FILL  ------------------------------  totalLines   wc -l  file   awk   print  1       num  lines in file barLen 30    --- iterate over lines in csv file --- count 0 while IFS   read -r   col1 col2 col3  do       update progress bar     count     count   1       percent      count   100    totalLines   100    100       i     percent    barLen   100       echo -ne  quot  r   BAR 0  i   FILL  i barLen    count  totalLines   percent   quot         other stuff           done  lt  file  Looks like this     ----------------------------  17128 218210  7

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You can implement this by overwriting a line   Use  r to go back to the beginning of the line without writing  n to the terminal   Write  n when you re done to advance the line   Use echo -ne to    not print  n and to recognize escape sequences like  r    Here s a demo   echo -ne                             33   r  sleep 1 echo -ne                             66   r  sleep 1 echo -ne                             100   r  echo -ne   n    In a comment below  puk mentions this  fails  if you start with a long line and then want to write a short line  In this case  you ll need to overwrite the length of the long line  e g   with spaces

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bin bash tot   wc -c  proc    fd 255   awk      print  1    now     echo     100     awk    pos   print  2    lt   proc    fdinfo 255 -166     tot-166           now  now  now  now  now  now  now  now  now    output   0   12   25   37   50   62   75   87   100     note  if instead of 255 you put 1 you will monitor the standard in   with 2 the standard out  but you must modify the source to set  tot  to the projected output file size

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There are many different answers about this topic  but when calculating percentage for text file operation  using current length   total size way  for example showing percentage of ver big file json progress  and I recommend using awk for this purpose  like below code  awk       function bar x  s  quot  quot  i 0 while  i    lt  x  s s  quot   quot  return s      BEGIN            quot ls -l  quot  ARGV 1     getline total          split total array           total array 5                       cur  length  0  1          percent int cur   total   100           printf  quot LINE  s  s  s   r quot   NR  bar percent  8   percent            END  print   very big file json   grep  quot keyword quot         This way it s very precise  stream based  but it s only suitable for text files

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Once I also had a busy script which was occupied for hours without showing any progress  So I implemented a function which mainly includes the techniques of the previous answers      bin bash   Updates the progress bar   Parameters  1  Percentage value update progress bar       if      -eq 1      then     if     1     0-9           then       if    1 -ge 0          then         if    1 -le 100            then           local val  1           local max 100            echo -n                for j in   seq  max             do             if    j -lt  val                then               echo -n                 else               if    j -eq  max                  then                 echo -n                   else                 echo -n                   fi             fi           done            echo -ne     val   r             if    val -eq  max              then             echo              fi         fi       fi     fi   fi    update progress bar 0   Further  time intensive  actions and progress bar updates update progress bar 100

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This lets you visualize that a command is still executing   while   do echo -n   sleep 1 done  amp  trap  kill     EXIT   Die with parent if we die prematurely tar zxf packages tar gz    or any other command here kill     amp  amp  trap     EXIT  Kill the loop and unset the trap or else the pid might get reassigned and we might end up killing a completely different process   This will create an infinite while loop that executes in the background and echoes a     every second  This will display   in the shell  Run the tar command or any a command you want  When that command finishes executing then kill the last job running in the background - which is the infinite while loop

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Flexible version with randomized colors  a string to manipulate and date   function spinner       local PID   1    local str    2 -Processing      local delay  0 1      tput civis    hide cursor   while   kill -0  PID 2 gt  dev null       do       printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S           str          sleep   delay        printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S           str          sleep   delay        printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S           str          sleep   delay    done   printf   e 38 5    RANDOM 257  m s r e 0m      date    d  m  Y  H  M  S               Done                sleep   delay      tput cnorm    restore cursor    return 0     Usage     your long running proccess pushed to the background sleep 20  amp     spinner capture-previous-proccess-id string spinner     Working     output example    04 06 2020 03 22 24        Seeding

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use the linux command pv   http   linux die net man 1 pv  it doesn t know the size if it s in the middle of the stream  but it gives a speed and total and from there you can figure out how long it should take and get feedback so you know it hasn t hung

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First execute the process to the background  then watch it s running status frequently that was running print the pattern and again check it status was running or not   Using while loop to watch the status of the process frequently   use the pgrep or any other command to watch and getting running status of a process   if using pgrep redirect the unnecessary output to  dev null as needed   Code   sleep 12 amp  while pgrep sleep  amp  gt   dev null do echo -en     sleep 0 5 done   This     will printed until sleep terminate this method used to implement the progress bar for progress time of program   you can also use this method to the commands to shell scripts for analyze it process time as visual   BUG   this pgrep method doesn t works in all situations unexpectedly the another process was running with same name  the while loop does not end   so getting the process running status by specify it s PID  using may the process can available with some commands    the command ps a will list all the process with id you need grep to find-out the pid of the specified process

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This is a psychedelic progressbar for bash scripting by nExace  It can be called from command line as    progressbar x y  where  x  is a time in seconds and  y  is a message associated with that portion of the progress   The inner progressbar   function itself is good standalone as well if you want other portions of your script to control the progressbar  For instance  sending  progressbar 10  Creating directory tree    will display                                                    10   Creating directory tree   Of course it will be nicely psychedelic though        bin bash  if        -eq 0    then echo  x is   time in seconds   and z is   message     echo  Usage  progressbar x z   exit  fi progressbar             local loca  1  local loca2  2          declare -a bgcolors  declare -a fgcolors          for i in  40  46   100  106   do                 bgcolors     i           done         for i in  30  36   90  96   do                 fgcolors     i           done         local u     50 - loca             local y  local t          local z  z   printf    s    u            local w     loca   2             local bouncer   oO  Oo            for   i 0 i lt loca i      do                 t    bouncer   i    bouncer    1                   bgcolor    E   bgcolors RANDOM   14  m   033 m                  y    bgcolor           done         fgcolor    E   fgcolors RANDOM   14  m          echo -ne    fgcolor t y z fgcolor t   E 96m   E 36m w   E 96m   E 92m  fgcolor loca2  033 m r     timeprogress             local loca   1   local loca2   2           loca   bc -l  lt  lt  lt  scale 2    loca 50           for i in  1  50   do                 progressbar   i    loca2                   sleep   loca           done         printf   n     timeprogress   1    2

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Using suggestions listed above  I decided to implement my own progress bar       usr bin env bash  main       for    i   0  i  lt   100  i  i   1    do     progress bar   i      sleep 0 1    done   progress bar  done    exit 0    progress bar       if     1      done     then     spinner  X      percent done  100      progress message  Done       new line   n    else     spinner   -        percent done    1 -0       progress message   percent done      fi    percent none      100 -  percent done           percent done  -gt 0    amp  amp  local done bar    printf     0s    seq -s     1  percent done          percent none  -gt 0    amp  amp  local none bar    printf     0s    seq -s     1  percent none         print the progress bar to the screen   printf   r Progress    s s   s  s  new line           done bar          none bar           spinner x      spinner  1           progress message     main

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It may be achieved in a pretty simple way   iterate from 0 to 100 with for loop sleep every step for 25ms  0 25 second  append to the  bar variable another   sign to make the progress bar wider echo progress bar and percentage   r cleans line and returns to the beginning of the line  -ne makes echo doesn t add newline at the end and parses  r special character   function progress       bar        for    x 0  x  lt   100  x       do         sleep 0 25         bar  quot   bar   quot          echo -ne  quot  bar   x   r quot      done     echo -e  quot  n quot       progress  gt             10    here  after 2 5 seconds    progress  gt                                 30    here  after 7 5 seconds  COLORED PROGRESS BAR function progress       bar        for    x 0  x  lt   100  x       do         sleep 0 05         bar  quot   bar   quot           echo -ne  quot  r quot          echo -ne  quot  e 43m bar e 0m quot           local left  quot     100 -  x    quot          printf  quot     left s quot          echo -n  quot   x   quot      done     echo -e  quot  n quot     To make a progress bar colorful  you can use formatting escape sequence - here the progress bar is yellow   e 43m  then we reset custom settings with  e 0m  otherwise it would affect further input even when the progress bar is done

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I needed a progress bar that would fit in popup bubble message  notify-send  to represent TV volume level  Recently I ve been writing a music player in python and the TV picture is turned off most of the time  Sample output from terminal   Bash script    bin bash    Show a progress bar at step number  1  from 0 to 100    function is int     test  quot    quot  -eq  quot    quot  2 gt   dev null        Parameter 1 must be integer if   is int  quot  1 quot    then    echo  quot Not an integer    1  quot     exit 1 fi    Parameter 1 must be  gt   0 and  lt   100 if    quot  1 quot  -ge 0    amp  amp     quot  1 quot  -le 100    2 gt  dev null then       else     echo bad volume    1      exit 1 fi    Main function designed for quickly copying to another program  Main           Bar  quot  quot                         Progress Bar   Volume level     Len 25                        Length of Progress Bar   Volume level     Div 4                         Divisor into Volume for   of blocks     Fill  quot    quot                       Fill up to  Len     Arr    quot   quot   quot   quot   quot    quot   quot   quot          UTF-8 left blocks  7 8  1 4  1 2  3 4      FullBlock      1    Div       Number of full blocks     PartBlock      1    Div       Size of partial block  array index       while     FullBlock -gt 0     do         Bar  quot  Bar  Arr 0   quot        Add 1 full block into Progress Bar            FullBlock--            Decrement full blocks counter     done        If remainder zero no partial block  else append character from array     if     PartBlock -gt 0     then         Bar  quot  Bar  Arr  PartBlock   quot      fi      while     quot    Bar  quot  -lt  quot  Len quot      do         Bar  quot  Bar Fill quot            Pad Progress Bar with fill character     done      echo Volume   quot  1  Bar quot      exit 0                        Remove this line when copying into program     Main  Main  quot    quot    Test bash script Use this script to test the progress bar in the terminal     bin bash    test progress bar3  Main           tput civis                                Turn off cursor     for   i 0  i lt  100  i      do         CurrLevel     progress bar3  quot  i quot       Generate progress bar 0 to 100         echo -ne  quot  CurrLevel quot   r              Reprint overtop same line         sleep  04     done     echo -e   n                               Advance line to keep last progress     echo  quot  0 Done quot      tput cnorm                                Turn cursor back on     Main  Main  quot    quot    TL DR This section details how notify-send is used to quickly spam popup bubble messages to the desktop  This is required because volume level can change many times a second and the default bubble message behavior is for a message to stay on the desktop for many seconds  Sample popup bubble message  Popup bubble message bash code From the script above the main function was copied to a new functioned called VolumeBar in an existing bash script called tvpowered  The exit 0 command in the copied main function was removed  Here s how to call it and let Ubuntu s notify-send command know we will be spamming popup bubble message  VolumeBar  CurrVolume   Ask Ubuntu  https   askubuntu com a 871207 307523 notify-send --urgency critical  quot tvpowered quot        -h string x-canonical-private-synchronous volume       --icon  usr share icons gnome 48x48 devices audio-speakers png        quot Volume   CurrVolume  Bar quot   This is the new line which tells notify-send to immediately replace last popup bubble  -h string x-canonical-private-synchronous volume    volume groups the popup bubble messages together and new messages in this group immediately replaces the previous  You can use anything instead of volume

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First of all bar is not the only one pipe progress meter  The other  maybe even more known  is pv  pipe viewer     Secondly bar and pv can be used for example like this     bar file1   wc -l    pv file1   wc -l   or even     tail -n 100 file1   bar   wc -l   tail -n 100 file1   pv   wc -l   one useful trick if you want to make use of bar and pv in commands that are working with files given in arguments  like e g  copy file1 file2  is to use process substitution     copy  lt  bar file1  file2   copy  lt  pv file1  file2   Process substitution is a bash magic thing that creates temporary fifo pipe files  dev fd  and connect stdout from runned process  inside parenthesis  through this pipe and copy sees it just like an ordinary file  with one exception  it can only read it forwards    Update   bar command itself allows also for copying  After man bar   bar --in-file  dev rmt 1cbn --out-file        tape-restore tar --size 2 4g --buffer-size 64k   But process substitution is in my opinion more generic way to do it  An it uses cp program itself

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My solution displays the percentage of the tarball that is currently being uncompressed and written  I use this when writing out 2GB root filesystem images  You really need a progress bar for these things  What I do is use gzip --list to get the total uncompressed size of the tarball  From that I calculate the blocking-factor needed to divide the file into 100 parts  Finally  I print a checkpoint message for each block  For a 2GB file this gives about 10MB a block  If that is too big then you can divide the BLOCKING FACTOR by 10 or 100  but then it s harder to print pretty output in terms of a percentage   Assuming you are using Bash then you can use the following shell function  untar progress          TARBALL  1   BLOCKING FACTOR   gzip --list   TARBALL        perl -MPOSIX -ane      2  amp  amp  print ceil  F 1  50688     tar --blocking-factor   BLOCKING FACTOR  --checkpoint 1       --checkpoint-action  ttyout Wrote  u    r  -zxf   TARBALL

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In case you have to show a temporal progress bar  by knowing in advance the showing time   you can use Python as follows      bin python from time import sleep import sys  if len sys argv     3      print  Usage    sys argv 0     lt total time gt      lt progressbar size gt       exit    TOTTIME float sys argv 1   BARSIZE float sys argv 2    PERCRATE 100 0 TOTTIME BARRATE BARSIZE TOTTIME  for i in range int TOTTIME  1       sys stdout write   r       s      -  str int BARSIZE    s   d         sys stdout write s        int BARRATE i   int PERCRATE i        sys stdout flush       SLEEPTIME   1 0     if i    int TOTTIME   SLEEPTIME   0 1     sleep SLEEPTIME  print      Then  assuming you saved the Python script as progressbar py  it s possible to show the progress bar from your bash script by running the following command   python progressbar py 10 50   It would show a progress bar sized 50 characters and  running  for 10 seconds

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Most unix commands will not give you the sort of direct feedback from which you can do this  Some will give you output on stdout or stderr that you can use   For something like tar you could use the -v switch and pipe the output to a program that updates a small animation for each line it reads   As tar writes out a list of files it s unravelled the program can update the animation   To do a percent complete you would have to know the number of files and count the lines   cp doesn t give this sort of output as far as I know   To monitor the progress of cp you would have to monitor the source and destination files and watch the size of the destination   You could write a small c program using the stat  2  system call to get the file size   This would read the size of the source then poll the destination file and update a   complete bar based on the size of the file written to date

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First of all bar is not the only one pipe progress meter  The other  maybe even more known  is pv  pipe viewer     Secondly bar and pv can be used for example like this     bar file1   wc -l    pv file1   wc -l   or even     tail -n 100 file1   bar   wc -l   tail -n 100 file1   pv   wc -l   one useful trick if you want to make use of bar and pv in commands that are working with files given in arguments  like e g  copy file1 file2  is to use process substitution     copy  lt  bar file1  file2   copy  lt  pv file1  file2   Process substitution is a bash magic thing that creates temporary fifo pipe files  dev fd  and connect stdout from runned process  inside parenthesis  through this pipe and copy sees it just like an ordinary file  with one exception  it can only read it forwards    Update   bar command itself allows also for copying  After man bar   bar --in-file  dev rmt 1cbn --out-file        tape-restore tar --size 2 4g --buffer-size 64k   But process substitution is in my opinion more generic way to do it  An it uses cp program itself

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There are many different answers about this topic  but when calculating percentage for text file operation  using current length   total size way  for example showing percentage of ver big file json progress  and I recommend using awk for this purpose  like below code  awk       function bar x  s  quot  quot  i 0 while  i    lt  x  s s  quot   quot  return s      BEGIN            quot ls -l  quot  ARGV 1     getline total          split total array           total array 5                       cur  length  0  1          percent int cur   total   100           printf  quot LINE  s  s  s   r quot   NR  bar percent  8   percent            END  print   very big file json   grep  quot keyword quot         This way it s very precise  stream based  but it s only suitable for text files

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I would also like to contribute my own progress bar  It achieves sub-character precision by using Half unicode blocks    Code is included

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In case you have to show a temporal progress bar  by knowing in advance the showing time   you can use Python as follows      bin python from time import sleep import sys  if len sys argv     3      print  Usage    sys argv 0     lt total time gt      lt progressbar size gt       exit    TOTTIME float sys argv 1   BARSIZE float sys argv 2    PERCRATE 100 0 TOTTIME BARRATE BARSIZE TOTTIME  for i in range int TOTTIME  1       sys stdout write   r       s      -  str int BARSIZE    s   d         sys stdout write s        int BARRATE i   int PERCRATE i        sys stdout flush       SLEEPTIME   1 0     if i    int TOTTIME   SLEEPTIME   0 1     sleep SLEEPTIME  print      Then  assuming you saved the Python script as progressbar py  it s possible to show the progress bar from your bash script by running the following command   python progressbar py 10 50   It would show a progress bar sized 50 characters and  running  for 10 seconds

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You can implement this by overwriting a line   Use  r to go back to the beginning of the line without writing  n to the terminal   Write  n when you re done to advance the line   Use echo -ne to    not print  n and to recognize escape sequences like  r    Here s a demo   echo -ne                             33   r  sleep 1 echo -ne                             66   r  sleep 1 echo -ne                             100   r  echo -ne   n    In a comment below  puk mentions this  fails  if you start with a long line and then want to write a short line  In this case  you ll need to overwrite the length of the long line  e g   with spaces

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A simpler method that works on my system using the pipeview   pv   utility   srcdir  1 outfile  2   tar -Ocf -  srcdir   pv -i 1 -w 50 -berps  du -bs  srcdir   awk   print  1      7za a -si  outfile

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Most unix commands will not give you the sort of direct feedback from which you can do this  Some will give you output on stdout or stderr that you can use   For something like tar you could use the -v switch and pipe the output to a program that updates a small animation for each line it reads   As tar writes out a list of files it s unravelled the program can update the animation   To do a percent complete you would have to know the number of files and count the lines   cp doesn t give this sort of output as far as I know   To monitor the progress of cp you would have to monitor the source and destination files and watch the size of the destination   You could write a small c program using the stat  2  system call to get the file size   This would read the size of the source then poll the destination file and update a   complete bar based on the size of the file written to date

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https   github com extensionsapp progre sh  Create 40 percent progress  progreSh 40

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Haven t seen anything similar and all custom functions here seem to focus on rendering alone so    my very simple POSIX compliant solution below with step by step explanations because this question isn t trivial   TL DR  Rendering the progress bar is very easy  Estimating how much of it should render is a different matter  This is how to render  animate  the progress bar - you can copy amp paste this example to a file and run it      bin sh  BAR                            this is full bar  e g  20 chars  for i in  1  20   do     echo -ne   r  BAR 0  i     print  i chars of  BAR from 0 position     sleep  1                   wait 100ms between  frames  done     1  20  - values from 1 to 20 echo -n - print without new line at the end echo -e - interpret special characters while printing   r  - carriage return  a special char to return to the beginning of the line   You can make it render any content at any speed so this method is very universal  e g  often used for visualization of  hacking  in silly movies  no kidding   Full answer  The meat of the problem is how to determine the  i value  i e  how much of the progress bar to display  In the above example I just let it increment in for loop to illustrate the principle but a real life application would use an infinite loop and calculate the  i variable on each iteration  To make said calculation it needs the following ingredients    how much work there is to be done how much work has been done so far   In case of cp it needs the size of a source file and the size of the target file      bin sh   src  path to source file  tgt  path to target file  cp   src    tgt   amp                        the  amp  forks the  cp  process so the rest                                          of the code runs without waiting  async   BAR                         src size   stat -c s   src               how much there is to do  while true  do     tgt size   stat -c s   tgt           how much has been done so far     i      tgt size   20    src size        echo -ne   r  BAR 0  i       if    tgt size     src size    then         echo                             add a new line at the end         break                            break the loop     fi     sleep  1 done    stat - check file stats -c - return formatted value  s - total size   In case of operations like file unpacking  calculating the source size is slightly more difficult but still as easy as getting the size of an uncompressed file      bin sh src size   gzip -l   src    tail -n1   tr -s       cut -d    -f3     gzip -l - display info about zip archive tail -n1 - work with 1 line from the bottom tr -s     - translate multiple spaces to one  squeeze them  cut -d    -f3 - cut 3rd space-delimited column   Here s the meat of the problem  though  This solution is less and less general  All calculations of the actual progress are tightly bound to the domain you re trying to visualize  is it a single file operation  a timer countdown  a rising number of files in a directory  operation on multiple files  etc   therefore  it can t be reused  The only reusable part is progress bar rendering  To reuse it you need to abstract it and save in a file  e g   usr lib progress bar sh   then define functions that calculate input values specific to your domain  This is how a generalized code could look like  I also made the  BAR dynamic because people were asking for it  the rest should be clear by now       bin sh  BAR length 50 BAR character     BAR   printf     BAR length s    tr      BAR character   work todo   get work todo                how much there is to do  while true  do     work done   get work done            how much has been done so far     i      work done    BAR length    work todo        echo -ne   r  BAR 0  i       if    work done     work todo    then         echo            break      fi     sleep  1 done    printf - a builtin for printing stuff in a given format printf   50s  - print nothing  pad it with 50 spaces tr           - translate every space to hash sign   And this is how you d use it      bin sh  src  path to source file tgt  path to target file  function get work todo         echo   stat -c s   src      function get work done           -e   tgt     amp  amp                      if target file exists         echo   stat -c s   tgt           echo its size  else         echo 0                           echo zero    cp   src    tgt   amp                        copy in the background  source  usr lib progress bar sh          execute the progress bar   Obviously it can be wrapped in a function  rewritten to work with piped streams  rewritten to other language  whatever s your poison

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Some posts have showed how to display the command s progress   In order to calculate it  you ll need to see how much you ve progressed   On BSD systems some commands  such as dd 1    accept a SIGINFO signal  and will report their progress   On Linux systems some commands will respond similarly to SIGUSR1   If this facility is available  you can pipe your input through dd to monitor the number of bytes processed   Alternatively  you can use lsof to obtain the offset of the file s read pointer  and thereby calculate the progress   I ve written a command  named pmonitor  that displays the progress of processing a specified process or file   With it you can do things  such as the following     pmonitor -c gzip  home dds data mysql-2015-04-01 sql gz 58 06    An earlier version of Linux and FreeBSD shell scripts appears on my blog

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I was looking for something more sexy than the selected answer  so did my own script   Preview    Source  I put it on github progress-bar sh  progress-bar       local duration   1        already done     for   done 0  done lt  elapsed  done      do printf      done       remaining     for   remain  elapsed  remain lt  duration  remain      do printf      done       percentage     printf     s           elapsed  100    duration  100 100           clean line     printf   r        for    elapsed 1  elapsed lt   duration  elapsed       do       already done  remaining  percentage       sleep 1       clean line   done   clean line     Usage   progress-bar 100

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https   github com extensionsapp progre sh  Create 40 percent progress  progreSh 40

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I was looking for something more sexy than the selected answer  so did my own script   Preview    Source  I put it on github progress-bar sh  progress-bar       local duration   1        already done     for   done 0  done lt  elapsed  done      do printf      done       remaining     for   remain  elapsed  remain lt  duration  remain      do printf      done       percentage     printf     s           elapsed  100    duration  100 100           clean line     printf   r        for    elapsed 1  elapsed lt   duration  elapsed       do       already done  remaining  percentage       sleep 1       clean line   done   clean line     Usage   progress-bar 100

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APT style progress bar  Does not break normal output     EDIT  For an updated version check my github page  I was not satisfied with the responses on this question  What I was personally looking for was a fancy progress bar as is seen by APT   I had a look at the C source code for APT and decided to write my own equivalent for bash   This progress bar will stay nicely at the bottom of the terminal and will not interfere with any output sent to the terminal   Please do note that the bar is currently fixed at 100 characters wide  If you want scale it to the size of the terminal  this is fairly easy to accomplish as well  The updated version on my github page handles this well    I will post my script here  Usage example   source   progress bar sh echo  This is some output  setup scroll area sleep 1 echo  This is some output 2  draw progress bar 10 sleep 1 echo  This is some output 3  draw progress bar 50 sleep 1 echo  This is some output 4  draw progress bar 90 sleep 1 echo  This is some output 5  destroy scroll area   The script  I strongly recommend the version on my github instead       bin bash    This code was inspired by the open source C code of the APT progress bar   http   bazaar launchpad net  ubuntu-branches ubuntu trusty apt trusty view head  apt-pkg install-progress cc L233      Usage    Source this script   setup scroll area   draw progress bar 10   draw progress bar 90   destroy scroll area     CODE SAVE CURSOR   033 s  CODE RESTORE CURSOR   033 u  CODE CURSOR IN SCROLL AREA   033 1A  COLOR FG   e 30m  COLOR BG   e 42m  RESTORE FG   e 39m  RESTORE BG   e 49m   function setup scroll area         lines   tput lines      let lines  lines-1       Scroll down a bit to avoid visual glitch when the screen area shrinks by one row     echo -en   n         Save cursor     echo -en   CODE SAVE CURSOR        Set scroll region  this will place the cursor in the top left      echo -en   033 0   lines r         Restore cursor but ensure its inside the scrolling area     echo -en   CODE RESTORE CURSOR      echo -en   CODE CURSOR IN SCROLL AREA         Start empty progress bar     draw progress bar 0    function destroy scroll area         lines   tput lines        Save cursor     echo -en   CODE SAVE CURSOR        Set scroll region  this will place the cursor in the top left      echo -en   033 0   lines r         Restore cursor but ensure its inside the scrolling area     echo -en   CODE RESTORE CURSOR      echo -en   CODE CURSOR IN SCROLL AREA         We are done so clear the scroll bar     clear progress bar        Scroll down a bit to avoid visual glitch when the screen area grows by one row     echo -en   n n     function draw progress bar         percentage  1     lines   tput lines      let lines  lines       Save cursor     echo -en   CODE SAVE CURSOR         Move cursor position to last row     echo -en   033   lines  0f         Clear progress bar     tput el        Draw progress bar     print bar text  percentage        Restore cursor position     echo -en   CODE RESTORE CURSOR     function clear progress bar         lines   tput lines      let lines  lines       Save cursor     echo -en   CODE SAVE CURSOR         Move cursor position to last row     echo -en   033   lines  0f         clear progress bar     tput el        Restore cursor position     echo -en   CODE RESTORE CURSOR     function print bar text         local percentage  1        Prepare progress bar     let remainder 100- percentage     progress bar   echo -ne      echo -en    COLOR FG   COLOR BG    printf new      percentage  echo -en    RESTORE FG   RESTORE BG    printf new      remainder  echo -ne              Print progress bar     if    1 -gt 99       then         echo -ne    progress bar       else         echo -ne    progress bar       fi    printf new         str  1     num  2     v   printf   -  num s    str       echo -ne    v     str

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for me easiest to use and best looking so far is command pv or bar like some guy already wrote  for example  need to make a backup of entire drive with dd  normally you use dd if   input drive path  of   output file path    with pv you can make it like this     dd if   input drive path    pv   dd of   output file path    and the progress goes directly to STDOUT as this       7 46GB 0 33 40  3 78MB s      lt   gt                                                 after it is done summary comes up      15654912 0 records in     15654912 0 records out     8015314944 bytes  8 0 GB  copied  2020 49 s  4 0 MB s

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This is only applicable using gnome zenity   Zenity provides a great native interface to bash scripts  https   help gnome org users zenity stable   From Zenity Progress Bar  Example      bin sh   echo  10    sleep 1 echo    Updating mail logs    sleep 1 echo  20    sleep 1 echo    Resetting cron jobs    sleep 1 echo  50    sleep 1 echo  This line will just be ignored    sleep 1 echo  75    sleep 1 echo    Rebooting system    sleep 1 echo  100    sleep 1     zenity --progress     --title  Update System Logs      --text  Scanning mail logs         --percentage 0  if          -1     then         zenity --error             --text  Update canceled   fi

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Most unix commands will not give you the sort of direct feedback from which you can do this  Some will give you output on stdout or stderr that you can use   For something like tar you could use the -v switch and pipe the output to a program that updates a small animation for each line it reads   As tar writes out a list of files it s unravelled the program can update the animation   To do a percent complete you would have to know the number of files and count the lines   cp doesn t give this sort of output as far as I know   To monitor the progress of cp you would have to monitor the source and destination files and watch the size of the destination   You could write a small c program using the stat  2  system call to get the file size   This would read the size of the source then poll the destination file and update a   complete bar based on the size of the file written to date

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I used an answer from Creating string of repeated characters in shell script for char repeating  I have two relatively small bash versions for scripts that need to display progress bar  for example  a loop that goes through many files  but not useful for big tar files or copy operations   The faster one consists of two functions  one to prepare the strings for bar display   preparebar        1 - bar length    2 - bar char     barlen  1     barspaces   printf    s    1       barchars   printf    s    1    tr       2       and one to display a progress bar   progressbar        1 - number  -1 for clearing the bar     2 - max number     if    1 -eq -1    then         printf   r   barspaces r      else         barch     1 barlen  2           barsp    barlen-barch           printf   r     barch s    barsp s  r    barchars    barspaces      fi     It could be used as   preparebar 50       which means prepare strings for bar with 50     characters  and after that   progressbar 35 80   will display the number of     characters that corresponds to 35 80 ratio                                                          Be aware that function displays the bar on the same line over and over until you  or some other program  prints a newline  If you put -1 as first parameter  the bar would be erased   progressbar -1 80   The slower version is all in one function   progressbar        1 - number    2 - max number    3 - number of     characters     if    1 -eq -1    then         printf   r    s r    3      else         i     1  3  2           j     3-i           printf   r   s    i    tr                 printf    s  r    j      fi     and it can be used as  the same example as above    progressbar 35 80 50   If you need progressbar on stderr  just add  gt  amp 2 at the end of each printf command

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A simpler method that works on my system using the pipeview   pv   utility   srcdir  1 outfile  2   tar -Ocf -  srcdir   pv -i 1 -w 50 -berps  du -bs  srcdir   awk   print  1      7za a -si  outfile

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I needed a progress bar for iterating over the lines in a csv file  Was able to adapt cprn s code into something useful for me  BAR                                  FILL  ------------------------------  totalLines   wc -l  file   awk   print  1       num  lines in file barLen 30    --- iterate over lines in csv file --- count 0 while IFS   read -r   col1 col2 col3  do       update progress bar     count     count   1       percent      count   100    totalLines   100    100       i     percent    barLen   100       echo -ne  quot  r   BAR 0  i   FILL  i barLen    count  totalLines   percent   quot         other stuff           done  lt  file  Looks like this     ----------------------------  17128 218210  7

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I have built on the answer provided by fearside  This connects to an Oracle database to retrieve the progress of an RMAN restore      bin bash     1  Create ProgressBar function    1 1 Input is currentState  1  and totalState  2   function ProgressBar      Process data let  progress    1  100   2  100  100 let  done     progress  4  10 let  left 40-  done   Build progressbar string lengths  fill   printf      done s    empty   printf      left s      1 2 Build progressbar strings and print the ProgressBar line   1 2 1 Output example    1 2 1 1 Progress                                              100  printf   rProgress       fill         empty    -      progress         function rman check   sqlplus -s   as sysdba  lt  lt EOF set heading off set feedback off select round  sofar totalwork    100 0  pct done from v  session longops where totalwork  gt  sofar AND opname NOT LIKE   aggregate   AND opname like  RMAN    exit EOF      Variables  start 1    This accounts as the  totalState  variable for the ProgressBar function  end 100   rman progress   rman check   echo    rman progress     Proof of concept  for number in   seq    start     end    while      rman progress  -lt 100   do  for number in  rman progress do sleep 10 ProgressBar   number     end  done   rman progress   rman check   done printf   nFinished  n

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Got an easy progress bar function that i wrote the other day      bin bash   1  Create ProgressBar function   1 1 Input is currentState  1  and totalState  2  function ProgressBar     Process data     let  progress    1  100   2  100  100     let  done     progress  4  10     let  left 40-  done   Build progressbar string lengths      fill   printf      done s        empty   printf      left s      1 2 Build progressbar strings and print the ProgressBar line   1 2 1 Output example                               1 2 1 1 Progress                                              100  printf   rProgress       fill         empty    -      progress           Variables  start 1    This accounts as the  totalState  variable for the ProgressBar function  end 100    Proof of concept for number in   seq    start     end   do     sleep 0 1     ProgressBar   number     end  done printf   nFinished  n    Or snag it from  https   github com fearside ProgressBar

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use the linux command pv   http   linux die net man 1 pv  it doesn t know the size if it s in the middle of the stream  but it gives a speed and total and from there you can figure out how long it should take and get feedback so you know it hasn t hung

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I prefer to use dialog with the --gauge param  Is used very often in  deb package installations and other basic configuration stuff of many distros  So you don t need to reinvent the wheel    again  Just put an int value from 1 to 100  stdin  One basic and silly example   for a in  1  100   do sleep  1s  echo  a  dialog --gauge  waiting  7 30  done   I have this  bin Wait file  with chmod u x perms  for cooking purposes  P      bin bash INIT   bin date   s  NOW  INIT FUTURE   bin date -d   1    s     FUTURE -a  FUTURE -eq  FUTURE      exit DIFF  echo   FUTURE -  INIT  bc -l   while    INIT -le  FUTURE -a  NOW -lt  FUTURE    do     NOW   bin date   s      STEP  echo   NOW -  INIT  bc -l      SLEFT  echo   FUTURE -  NOW  bc -l      MLEFT  echo  scale 2  SLEFT 60  bc -l      TEXT   SLEFT seconds left   MLEFT minutes        TITLE  Waiting  1   2      sleep 1s     PTG  echo  scale 0  STEP   100    DIFF  bc -l      echo  PTG  dialog --title   TITLE  --gauge   TEXT  7 72 done  if     2           then msg  Espera terminada   1  audio  Listo   else msg  2 audio  2 fi    usr bin notify-send --icon stock appointment-reminder-excl   msg  espeak -v spanish   audio    So I can put   Wait  34 min   warm up the oven   or   Wait  dec 31   happy new year

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GNU tar has a useful option which gives a functionality of a simple progress bar         Another available checkpoint action is    dot     or           It instructs tar to print a single dot on the standard listing stream  e g      tar -c --checkpoint 1000 --checkpoint-action dot  var       The same effect may be obtained by     tar -c --checkpoint  1000  var

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Haven t seen anything similar and all custom functions here seem to focus on rendering alone so    my very simple POSIX compliant solution below with step by step explanations because this question isn t trivial   TL DR  Rendering the progress bar is very easy  Estimating how much of it should render is a different matter  This is how to render  animate  the progress bar - you can copy amp paste this example to a file and run it      bin sh  BAR                            this is full bar  e g  20 chars  for i in  1  20   do     echo -ne   r  BAR 0  i     print  i chars of  BAR from 0 position     sleep  1                   wait 100ms between  frames  done     1  20  - values from 1 to 20 echo -n - print without new line at the end echo -e - interpret special characters while printing   r  - carriage return  a special char to return to the beginning of the line   You can make it render any content at any speed so this method is very universal  e g  often used for visualization of  hacking  in silly movies  no kidding   Full answer  The meat of the problem is how to determine the  i value  i e  how much of the progress bar to display  In the above example I just let it increment in for loop to illustrate the principle but a real life application would use an infinite loop and calculate the  i variable on each iteration  To make said calculation it needs the following ingredients    how much work there is to be done how much work has been done so far   In case of cp it needs the size of a source file and the size of the target file      bin sh   src  path to source file  tgt  path to target file  cp   src    tgt   amp                        the  amp  forks the  cp  process so the rest                                          of the code runs without waiting  async   BAR                         src size   stat -c s   src               how much there is to do  while true  do     tgt size   stat -c s   tgt           how much has been done so far     i      tgt size   20    src size        echo -ne   r  BAR 0  i       if    tgt size     src size    then         echo                             add a new line at the end         break                            break the loop     fi     sleep  1 done    stat - check file stats -c - return formatted value  s - total size   In case of operations like file unpacking  calculating the source size is slightly more difficult but still as easy as getting the size of an uncompressed file      bin sh src size   gzip -l   src    tail -n1   tr -s       cut -d    -f3     gzip -l - display info about zip archive tail -n1 - work with 1 line from the bottom tr -s     - translate multiple spaces to one  squeeze them  cut -d    -f3 - cut 3rd space-delimited column   Here s the meat of the problem  though  This solution is less and less general  All calculations of the actual progress are tightly bound to the domain you re trying to visualize  is it a single file operation  a timer countdown  a rising number of files in a directory  operation on multiple files  etc   therefore  it can t be reused  The only reusable part is progress bar rendering  To reuse it you need to abstract it and save in a file  e g   usr lib progress bar sh   then define functions that calculate input values specific to your domain  This is how a generalized code could look like  I also made the  BAR dynamic because people were asking for it  the rest should be clear by now       bin sh  BAR length 50 BAR character     BAR   printf     BAR length s    tr      BAR character   work todo   get work todo                how much there is to do  while true  do     work done   get work done            how much has been done so far     i      work done    BAR length    work todo        echo -ne   r  BAR 0  i       if    work done     work todo    then         echo            break      fi     sleep  1 done    printf - a builtin for printing stuff in a given format printf   50s  - print nothing  pad it with 50 spaces tr           - translate every space to hash sign   And this is how you d use it      bin sh  src  path to source file tgt  path to target file  function get work todo         echo   stat -c s   src      function get work done           -e   tgt     amp  amp                      if target file exists         echo   stat -c s   tgt           echo its size  else         echo 0                           echo zero    cp   src    tgt   amp                        copy in the background  source  usr lib progress bar sh          execute the progress bar   Obviously it can be wrapped in a function  rewritten to work with piped streams  rewritten to other language  whatever s your poison

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GNU tar has a useful option which gives a functionality of a simple progress bar         Another available checkpoint action is    dot     or           It instructs tar to print a single dot on the standard listing stream  e g      tar -c --checkpoint 1000 --checkpoint-action dot  var       The same effect may be obtained by     tar -c --checkpoint  1000  var

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Based on the work of Edouard Lopez  I created a progress bar that fits the size of the screen  whatever it is  Check it out     It s also posted on Git Hub      bin bash     Progress bar by Adriano Pinaffo   Available at https   github com adriano-pinaffo progressbar sh   Inspired on work by Edouard Lopez  https   github com edouard-lopez progress-bar sh    Version 1 0   Date April  28th 2017  function error     echo  Usage   0  SECONDS     case  1 in     1  echo  Pass one argument only      exit 1            2  echo  Parameter must be a number      exit 2               echo  Unknown error      exit 999   esac          -ne 1     amp  amp  error 1     1      0-9          error 2  duration   1  barsize     tput cols  - 7   unity     barsize    duration   increment     barsize  duration   skip     duration   duration- increment    curr bar 0 prev bar  for    elapsed 1  elapsed lt   duration  elapsed      do     Elapsed prev bar  curr bar   let curr bar   unity       increment -eq 0                   skip -eq 1     amp  amp                 elapsed   duration  increment    -eq 0     amp  amp  let curr bar                      elapsed  skip   -ne 0     amp  amp  let curr bar                elapsed -eq 1  amp  amp   increment -eq 1  amp  amp   skip -ne 1     amp  amp  let curr bar            barsize- curr bar   -eq 1     amp  amp  let curr bar         curr bar -lt  barsize       curr bar  barsize   for    filled 0  filled lt   curr bar  filled       do     printf       done      Remaining   for    remain  curr bar  remain lt  barsize  remain       do     printf       done      Percentage   printf     s          elapsed 100   duration        Return   sleep 1   printf   r  done printf   n  exit 0   Enjoy

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I needed a progress bar that would fit in popup bubble message  notify-send  to represent TV volume level  Recently I ve been writing a music player in python and the TV picture is turned off most of the time  Sample output from terminal   Bash script    bin bash    Show a progress bar at step number  1  from 0 to 100    function is int     test  quot    quot  -eq  quot    quot  2 gt   dev null        Parameter 1 must be integer if   is int  quot  1 quot    then    echo  quot Not an integer    1  quot     exit 1 fi    Parameter 1 must be  gt   0 and  lt   100 if    quot  1 quot  -ge 0    amp  amp     quot  1 quot  -le 100    2 gt  dev null then       else     echo bad volume    1      exit 1 fi    Main function designed for quickly copying to another program  Main           Bar  quot  quot                         Progress Bar   Volume level     Len 25                        Length of Progress Bar   Volume level     Div 4                         Divisor into Volume for   of blocks     Fill  quot    quot                       Fill up to  Len     Arr    quot   quot   quot   quot   quot    quot   quot   quot          UTF-8 left blocks  7 8  1 4  1 2  3 4      FullBlock      1    Div       Number of full blocks     PartBlock      1    Div       Size of partial block  array index       while     FullBlock -gt 0     do         Bar  quot  Bar  Arr 0   quot        Add 1 full block into Progress Bar            FullBlock--            Decrement full blocks counter     done        If remainder zero no partial block  else append character from array     if     PartBlock -gt 0     then         Bar  quot  Bar  Arr  PartBlock   quot      fi      while     quot    Bar  quot  -lt  quot  Len quot      do         Bar  quot  Bar Fill quot            Pad Progress Bar with fill character     done      echo Volume   quot  1  Bar quot      exit 0                        Remove this line when copying into program     Main  Main  quot    quot    Test bash script Use this script to test the progress bar in the terminal     bin bash    test progress bar3  Main           tput civis                                Turn off cursor     for   i 0  i lt  100  i      do         CurrLevel     progress bar3  quot  i quot       Generate progress bar 0 to 100         echo -ne  quot  CurrLevel quot   r              Reprint overtop same line         sleep  04     done     echo -e   n                               Advance line to keep last progress     echo  quot  0 Done quot      tput cnorm                                Turn cursor back on     Main  Main  quot    quot    TL DR This section details how notify-send is used to quickly spam popup bubble messages to the desktop  This is required because volume level can change many times a second and the default bubble message behavior is for a message to stay on the desktop for many seconds  Sample popup bubble message  Popup bubble message bash code From the script above the main function was copied to a new functioned called VolumeBar in an existing bash script called tvpowered  The exit 0 command in the copied main function was removed  Here s how to call it and let Ubuntu s notify-send command know we will be spamming popup bubble message  VolumeBar  CurrVolume   Ask Ubuntu  https   askubuntu com a 871207 307523 notify-send --urgency critical  quot tvpowered quot        -h string x-canonical-private-synchronous volume       --icon  usr share icons gnome 48x48 devices audio-speakers png        quot Volume   CurrVolume  Bar quot   This is the new line which tells notify-send to immediately replace last popup bubble  -h string x-canonical-private-synchronous volume    volume groups the popup bubble messages together and new messages in this group immediately replaces the previous  You can use anything instead of volume

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I did a pure shell version for an embedded system taking advantage of     usr bin dd s SIGUSR1 signal handling feature   Basically  if you send a  kill SIGUSR1   pid of running dd process    it ll output a summary of throughput speed and amount transferred   backgrounding dd and then querying it regularly for updates  and generating hash ticks like old-school ftp clients used to  Using  dev stdout as the destination for non-stdout friendly programs like scp   The end result allows you to take any file transfer operation and get progress update that looks like old-school FTP  hash  output where you d just get a hash mark for every X bytes   This is hardly production quality code  but you get the idea  I think it s cute    For what it s worth  the actual byte-count might not be reflected correctly in the number of hashes - you may have one more or less depending on rounding issues  Don t use this as part of a test script  it s just eye-candy  And  yes  I m aware this is terribly inefficient - it s a shell script and I make no apologies for it    Examples with wget  scp and tftp provided at the end  It should work with anything that has emits data  Make sure to use  dev stdout for programs that aren t stdout friendly      bin sh     Copyright  C  Nathan Ramella  nar progress-script remix net  2010    LGPLv2 license   If you use this  send me an email to say thanks and let me know what your product   is so I can tell all my friends I m a big man on the internet   progress filter              local START   date    s           local SIZE 1         local DURATION 1         local BLKSZ 51200         local TMPFILE  tmp tmpfile         local PROGRESS  tmp tftp progress         local BYTES LAST CYCLE 0         local BYTES THIS CYCLE 0          rm -f   PROGRESS           dd bs  BLKSZ of   TMPFILE  2 gt  amp 1                     grep --line-buffered -E     digit     bytes                      awk    print  1     gt  gt    PROGRESS   amp             Loop while the  dd  exists  It would be  more better  if we           actually looked for the specific child ID of the running            process by identifying which child process it was  If someone           else is running dd  it will mess things up             My PID handling is dumb  it assumes you only have one running dd on           the system  this should be fixed to just get the PID of the child           process from the shell           while     pidof dd  -gt 1    do                    PROTIP  You can sleep partial seconds  at least on linux                  sleep  5                        Force dd to update us on it s progress  which gets                   redirected to  PROGRESS file                                       dumb pid handling again                 pkill -USR1 dd                  local BYTES THIS CYCLE   tail -1  PROGRESS                  local XFER BLKS     BYTES THIS CYCLE-BYTES LAST CYCLE  BLKSZ                      Don t print anything unless we ve got 1 block or more                    This allows for stdin stderr interactions to occur                   without printing a hash erroneously                     Also makes it possible for you to background  scp                     but still use the  dev stdout trick  even  if scp                    inevitably  asks for a password                                       Fancy                   if    XFER BLKS -gt 0    then                         printf    0 s    seq 0  XFER BLKS                          BYTES LAST CYCLE  BYTES THIS CYCLE                 fi         done          local SIZE   stat -c  s   TMPFILE          local NOW   date    s            if    NOW -eq 0    then                 NOW 1         fi          local DURATION     NOW- START           local BYTES PER SECOND     SIZE   DURATION            local KBPS    SIZE DURATION 1024           local MD5   md5sum  TMPFILE   awk    print  1                This function prints out ugly stuff suitable for eval              rather than a pretty string  This makes it a bit more            flexible if you have a custom format  or dare I say  locale            printf   nDURATION  d nBYTES  d nKBPS  f nMD5  s n                 DURATION                SIZE                KBPS                MD5     Examples   echo  wget  wget -q -O  dev stdout http   www blah com somefile zip   progress filter  echo  tftp  tftp -l  dev stdout -g -r something firmware bin 192 168 1 1   progress filter  echo  scp  scp user 192 168 1 1   myfile tar  dev stdout   progress filter

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I have built on the answer provided by fearside  This connects to an Oracle database to retrieve the progress of an RMAN restore      bin bash     1  Create ProgressBar function    1 1 Input is currentState  1  and totalState  2   function ProgressBar      Process data let  progress    1  100   2  100  100 let  done     progress  4  10 let  left 40-  done   Build progressbar string lengths  fill   printf      done s    empty   printf      left s      1 2 Build progressbar strings and print the ProgressBar line   1 2 1 Output example    1 2 1 1 Progress                                              100  printf   rProgress       fill         empty    -      progress         function rman check   sqlplus -s   as sysdba  lt  lt EOF set heading off set feedback off select round  sofar totalwork    100 0  pct done from v  session longops where totalwork  gt  sofar AND opname NOT LIKE   aggregate   AND opname like  RMAN    exit EOF      Variables  start 1    This accounts as the  totalState  variable for the ProgressBar function  end 100   rman progress   rman check   echo    rman progress     Proof of concept  for number in   seq    start     end    while      rman progress  -lt 100   do  for number in  rman progress do sleep 10 ProgressBar   number     end  done   rman progress   rman check   done printf   nFinished  n

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I wanted to track progress based on the number of lines a command output against a target number of lines from a previous run      bin bash function lines     local file  1   local default  2   if    -f  file     then     wc -l  file   awk   print  1      else     echo  default   fi    function bar     local items  1   local total  2   local size  3   percent     items  size  total    size     left     size- percent     chars   local s   printf     percent s    echo    s           echo -ne    chars gt      printf     left s    echo -ne    r     function clearbar     local size  1   printf      size s      echo -ne   r     function progress     local pid  1   local total  2   local file  3    bar 0 100 50   while       ps a   awk   print  1     grep  pid       do     bar   lines  file 0   total 50     sleep 1   done   clearbar 50   wait  pid   return        Then use it like this   target   lines build log 1000   mvn clean install  gt  build log 2 gt  amp 1   amp  progress     target build log   It outputs a progress bar that looks something like this                                                    gt        The bar grows as the number of lines output reaches the target  If the number of lines exceeds the target  the bar starts over  hopefully the target is good    BTW  I m using bash on Mac OSX  I based this code on a spinner from mariascio

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Got an easy progress bar function that i wrote the other day      bin bash   1  Create ProgressBar function   1 1 Input is currentState  1  and totalState  2  function ProgressBar     Process data     let  progress    1  100   2  100  100     let  done     progress  4  10     let  left 40-  done   Build progressbar string lengths      fill   printf      done s        empty   printf      left s      1 2 Build progressbar strings and print the ProgressBar line   1 2 1 Output example                               1 2 1 1 Progress                                              100  printf   rProgress       fill         empty    -      progress           Variables  start 1    This accounts as the  totalState  variable for the ProgressBar function  end 100    Proof of concept for number in   seq    start     end   do     sleep 0 1     ProgressBar   number     end  done printf   nFinished  n    Or snag it from  https   github com fearside ProgressBar

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Once I also had a busy script which was occupied for hours without showing any progress  So I implemented a function which mainly includes the techniques of the previous answers      bin bash   Updates the progress bar   Parameters  1  Percentage value update progress bar       if      -eq 1      then     if     1     0-9           then       if    1 -ge 0          then         if    1 -le 100            then           local val  1           local max 100            echo -n                for j in   seq  max             do             if    j -lt  val                then               echo -n                 else               if    j -eq  max                  then                 echo -n                   else                 echo -n                   fi             fi           done            echo -ne     val   r             if    val -eq  max              then             echo              fi         fi       fi     fi   fi    update progress bar 0   Further  time intensive  actions and progress bar updates update progress bar 100

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I had the same thing to do today and based on Diomidis answer  here is how I did it  linux debian 6 0 7   Maybe  that could help you       bin bash  echo  getting script inode  inode  ls -i   script sh   cut -d    -f1  echo  inode  echo  getting the script size  size  cat script sh   wc -c  echo  size  echo  executing script    script sh  amp  pid    echo  child pid    pid   while true  do         let offset  lsof -o0 -o -p  pid   grep  inode   awk -F      print  7     cut -d t  -f 2          let percent 100  offset  size         echo -ne    percent   r  done

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bin bash  function progress bar         bar        total 10        -z  1     amp  amp  input 0    input   1      x         for i in  seq 1 10   do         if    i -le  input    then             bar  bar x         else             bar   bar           fi     done      pct    200  input  total   2   100  input  total       pct     input 10       echo -ne  Progress       bar       pct     r          sleep 1     if    input -eq 10    then         echo -ne   n      fi      could create a function that draws this on a scale say 1-10 for the number of bars    progress bar 1 echo  doing something      progress bar 2 echo  doing something      progress bar 3 echo  doing something      progress bar 8 echo  doing something      progress bar 10

[bash] How to add a progress bar to a shell script?

Here is how it might look

Simple function that implements it

Usage example

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