Get just the filename from a path in a Bash script

Question

How would I get just the filename without the extension and no path   The following gives me no extension  but I still have the path attached   source file filename no ext   source file

User · Answer

source file filename no ext   source file       echo   source file filename no ext

User · Answer

Some more alternative options because regexes  regi    are awesome   Here is a Simple regex to do the job    regex            Example  grep     FP   hello world my file path hello my filename log   echo  FP   grep -oP   regex    Or using standard input  grep -oP   regex   lt  lt  lt   FP   Example  awk     echo  FP   awk   match  1    regex  a  END print a 0     Or using stardard input  awk   match  1    regex  a  END print a 0    lt  lt  lt   FP   If you need a more complicated regex  For example your path is wrapped in a string    StrFP  my string is awesome file   hello world my file path hello my filename log sweet path bro      this regex matches a string not containing   and ends with a period    then at least one word character    so its useful if you have an extension   regex          w 1       usage  grep -oP   regex   lt  lt  lt   StrFP    alternatively you can get a little more complicated and use lookarounds   this regex matches a part of a string that starts with    that does not contain a       then uses the lazy operator   to match any character at any amount  as little as possible hence the lazy     that is followed by a space    this allows use to match just a file name in a string with a file path if it has an exntension or not    also if the path doesnt have file it will match the last directory in the file path     however this will break if the file path has a space in it    regex     lt              s      to fix the above problem you can use sed to remove spaces from the file path only     as a side note unfortunately sed has limited regex capibility and it must be written out in long hand   NewStrFP   echo  StrFP   sed  s     a-z            a-z       1 3 g    grep -oP   regex   lt  lt  lt   NewStrFP   Total solution with Regexes   This function can give you the  filename with or without extension of a linux filepath even if the filename has multiple    s in it  It can also handle spaces in the filepath and if the file path is embedded or wrapped in a string    you may notice that the sed replace has gotten really crazy looking  I just added all of the allowed characters in a linux file path function Get-FileName        local FileString   1      local NoExtension   2      local FileString   echo  FileString   sed  s     a-zA-Z0-9  lt   gt             amp                     a-zA-Z0-9  lt   gt             amp                1 3 g        local regex     lt              s        local FileName   echo  FileString   grep -oP   regex        if      NoExtension            then         sed  s            g   lt  lt  lt   FileName     else         echo   FileName      fi       call the function with extension Get-FileName  my string is awesome file   hel lo world my file test path hello my filename log sweet path bro      call function without extension Get-FileName  my string is awesome file   hel lo world my file test path hello my filename log sweet path bro    1    If you have to mess with a windows path you can start with this one

User · Answer

Most UNIX-like operating systems have a basename executable for a very similar purpose  and dirname for the path    pax gt  a  tmp file txt pax gt  b   basename  a  pax gt  echo  b file txt   That unfortunately just gives you the file name  including the extension  so you d need to find a way to strip that off as well   So  given you have to do that anyway  you may as well find a method that can strip off the path and the extension   One way to do that  and this is a bash-only solution  needing no other executables    pax gt  a  tmp xx file tar gz pax gt  xpath   a      pax gt  xbase   a      pax gt  xfext   xbase      pax gt  xpref   xbase     pax gt  echo echo path   xpath  echo pref   xpref  echo ext   xfext   path  tmp xx pref file tar ext gz   That little snippet sets xpath  the file path   xpref  the file prefix  what you were specifically asking for  and xfext  the file extension

User · Answer

file     basename  file path

User · Answer

Here is an easy way to get the file name from a path   echo   PATH    rev   cut -d    -f1   rev   To remove the extension you can use  assuming the file name has only ONE dot  the extension dot    cut -d    -f1

User · Answer

basename and dirname solutions are more convenient  Those are alternative commands   FILE PATH   opt datastores sda2 test old img  echo   FILE PATH    sed  s           This returns test old img like basename   This is salt filename without extension   echo   FILE PATH    sed -r  s               1     It returns test old   And following statement gives the full path like dirname command   echo   FILE PATH    sed -r  s           1     It returns  opt datastores sda2

[bash] Get just the filename from a path in a Bash script

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