How do I find the width height of a terminal window

Question

As a simple example  I want to write a CLI script which can print   across the entire width of the terminal window      usr bin env php  lt  php echo str repeat              or     usr bin env python print             or     usr bin env bash x 0 while    x -lt        do echo -n      let x  x 1 done  echo

User · Answer

There are some cases where your rows LINES and columns do not match the actual size of the  terminal  being used  Perhaps you may not have a  tput  or  stty  available   Here is a bash function you can use to visually check the size  This will work up to 140 columns x 80 rows  You can adjust the maximums as needed   function term size       local i 0 digits    tens fmt    tens args        for i in  80  8      do         echo  i     i - 2        done     echo  If columns below wrap  LINES is first number in highest line above       echo  If truncated  LINES is second number       for i in  1  14      do         digits    digits 1234567890          tens fmt    tens fmt  10d          tens args     tens args       i      done     printf   tens fmt n     tens args          echo   digits

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In bash  the  LINES and  COLUMNS environmental variables should be able to do the trick  The will be set automatically upon any change in the terminal size   i e  the SIGWINCH signal

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In bash  the  LINES and  COLUMNS environmental variables should be able to do the trick  The will be set automatically upon any change in the terminal size   i e  the SIGWINCH signal

User · Answer

To do this in Windows CLI environment  the best way I can find is to use the mode command and parse the output   function getTerminalSizeOnWindows        output   array       size   array  width   gt 0  height   gt 0     exec  mode   output     foreach  output as  line         matches   array         w   preg match     s columns    s   d   s   i   line  matches       if  w           size  width     intval  matches 1          else          h   preg match     s lines    s   d   s   i   line  matches         if  h             size  height     intval  matches 1                      if  size  width   AND  size  height            break              return  size      I hope it s useful   NOTE  The height returned is the number of lines in the buffer  it is not the number of lines that are visible within the window  Any better options out there

User · Answer

tput cols tells you the number of columns  tput lines tells you the number of rows

User · Answer

To do this in Windows CLI environment  the best way I can find is to use the mode command and parse the output   function getTerminalSizeOnWindows        output   array       size   array  width   gt 0  height   gt 0     exec  mode   output     foreach  output as  line         matches   array         w   preg match     s columns    s   d   s   i   line  matches       if  w           size  width     intval  matches 1          else          h   preg match     s lines    s   d   s   i   line  matches         if  h             size  height     intval  matches 1                      if  size  width   AND  size  height            break              return  size      I hope it s useful   NOTE  The height returned is the number of lines in the buffer  it is not the number of lines that are visible within the window  Any better options out there

User · Answer

On POSIX  ultimately you want to be invoking the TIOCGWINSZ  Get WINdow SiZe  ioctl   call  Most languages ought to have some sort of wrapper for that  E g in Perl you can use Term  Size   use Term  Size qw  chars     my    columns   rows     chars   STDOUT

User · Answer

tput cols tells you the number of columns  tput lines tells you the number of rows

User · Answer

As I mentioned in lyceus answer  his code will fail on non-English locale Windows because then the output of mode may not contain the substrings  columns  or  lines     nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp   You can find the correct substring without looking for text    preg match   ---   n        2    lt cols gt  d       mode    matches     cols    matches  cols      Note that I m not even bothering with lines because it s unreliable  and I actually don t care about them    Edit  According to comments about Windows 8  oh you      I think this may be more reliable    preg match   CON     n        3    lt cols gt  d       mode    matches     cols    matches  cols      Do test it out though  because I didn t test it

User · Answer

And there s stty  from coreutils      stty size 60 120    lt   sample output   It will print the number of rows and columns  or height and width  respectively   Then you can use either cut or awk to extract the part you want   That s stty size   cut -d    -f1 for the height lines and stty size   cut -d    -f2 for the width columns

User · Answer

There are some cases where your rows LINES and columns do not match the actual size of the  terminal  being used  Perhaps you may not have a  tput  or  stty  available   Here is a bash function you can use to visually check the size  This will work up to 140 columns x 80 rows  You can adjust the maximums as needed   function term size       local i 0 digits    tens fmt    tens args        for i in  80  8      do         echo  i     i - 2        done     echo  If columns below wrap  LINES is first number in highest line above       echo  If truncated  LINES is second number       for i in  1  14      do         digits    digits 1234567890          tens fmt    tens fmt  10d          tens args     tens args       i      done     printf   tens fmt n     tens args          echo   digits

User · Answer

yes     head -n     tput lines     COLUMNS     tr -d   n

User · Answer

yes     head -n     tput lines     COLUMNS     tr -d   n

User · Answer

Inspired by  pixelbeat s answer  here s a horizontal bar brought to existence by tput  slight misuse of printf padding filling and tr    printf   0  tput cols d  0 tr  0

User · Answer

yes     head -n     tput lines     COLUMNS     tr -d   n

User · Answer

tput cols tells you the number of columns  tput lines tells you the number of rows

User · Answer

On POSIX  ultimately you want to be invoking the TIOCGWINSZ  Get WINdow SiZe  ioctl   call  Most languages ought to have some sort of wrapper for that  E g in Perl you can use Term  Size   use Term  Size qw  chars     my    columns   rows     chars   STDOUT

User · Answer

yes     head -n     tput lines     COLUMNS     tr -d   n

User · Answer

As I mentioned in lyceus answer  his code will fail on non-English locale Windows because then the output of mode may not contain the substrings  columns  or  lines     nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp  nbsp   You can find the correct substring without looking for text    preg match   ---   n        2    lt cols gt  d       mode    matches     cols    matches  cols      Note that I m not even bothering with lines because it s unreliable  and I actually don t care about them    Edit  According to comments about Windows 8  oh you      I think this may be more reliable    preg match   CON     n        3    lt cols gt  d       mode    matches     cols    matches  cols      Do test it out though  because I didn t test it

User · Answer

Inspired by  pixelbeat s answer  here s a horizontal bar brought to existence by tput  slight misuse of printf padding filling and tr    printf   0  tput cols d  0 tr  0

User · Answer

tput cols tells you the number of columns  tput lines tells you the number of rows

User · Answer

And there s stty  from coreutils      stty size 60 120    lt   sample output   It will print the number of rows and columns  or height and width  respectively   Then you can use either cut or awk to extract the part you want   That s stty size   cut -d    -f1 for the height lines and stty size   cut -d    -f2 for the width columns

[terminal] How do I find the width & height of a terminal window?

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