Can a Windows batch file determine its own file name

Question

Can a Windows batch file determine its own file name   For example  if I run the batch file C  Temp myScript bat  is there a command within myScript bat that can determine the string  myScript bat

User · Answer

Bear in mind that 0 is a special case of parameter numbers inside a batch file  where 0 means this file as given on the command line   So if the file is myfile bat  you could call it in several ways as follows  each of which would give you a different output from the  0 or   0 usage   myfile  myfile bat  mydir myfile bat  c  mydir myfile bat   c  mydir myfile bat   All of the above are legal calls if you call it from the correct relative place to the directory in which it exists     0 strips the quotes from the last example  whereas  0 does not   Because these all give different results   0  and   0 are very unlikely to be what you actually want to use   Here s a batch file to illustrate    echo Full path and filename    f0  echo Drive    d0  echo Path    p0  echo Drive and path    dp0  echo Filename without extension    n0  echo Filename with    extension    nx0  echo Extension    x0  echo Filename as given on command line   0  echo Filename as given on command line minus quotes    0  REM Build from parts  SETLOCAL  SET drv   d0  SET pth   p0  SET fpath   dp0  SET fname   n0  SET ext   x0  echo Simply Constructed name   fpath  fname  ext   echo Fully  Constructed name   drv  pth  fname  ext   ENDLOCAL pause

User · Answer

Below is my initial code    echo off Set z    echo  echo  z 0        0 echo  z  0        0 echo  z n0       n0 echo  z x0       x0 echo  z  n0       n0 echo  z dp0      dp0 echo  z  dp0      dp0 echo    I noticed that file name given by   0 and  0 is the way it was entered in the command-shell and not how that file is actually named  So if you want the literal case used for the file name you should use   n0  However  this will leave out the file extension  But if you know the file name you could add the  following code    set b   0 echo   n0 b  8 4    I have learned that    8 4   means start at the 9th character of the variable and then show show the next 4 characters  The range is 0 to the end of the variable string  So  Path  would be very long   fIlEnAmE bat 012345678901   However  this is not as sound as Jool s solution    x0  above    My Evidence   C  bin gt filename bat   0       filename bat   0      filename bat        C  bin gt fIlEnAmE bat   0       fIlEnAmE bat   0      fIlEnAmE bat  n0      n0  x0      x0   n0     FileName  dp0     dp0   dp0    C  bin     n0 b  8 4    FileName bat  Press any key to continue        C  bin gt dir  Volume in drive C has no label   Volume Serial Number is CE18-5BD0   Directory of C  bin       05 02 2018  11 22 PM               208 FileName bat     Here is the final code   echo off Set z    set b   0 echo  echo  z 0        0 echo  z  0        0 echo  z n0       n0 echo  z x0       x0 echo  z  n0       n0 echo  z dp0      dp0 echo  z  dp0      dp0 echo  echo A complex solution  echo                                     echo  z  n0 z b  8 4 z      n0 b  8 4  echo                                     echo  echo The preferred solution  echo                                     echo  z  n0 z  x0         n0  x0 echo                                     pause

User · Answer

You can get the file name  but you can also get the full path  depending what you place between the      and the  0   Take your pick from  d -- drive p -- path n -- file name x -- extension f -- full path   E g   from inside c  tmp foo bat    nx0 gives you  foo bat   whilst   dpnx0 gives  c  tmp foo bat   Note the pieces are always assembled in canonical order  so if you get cute and try   xnpd0  you still get  c  tmp foo bat

User · Answer

Using the following script  based on SLaks answer  I determined that the correct answer is   echo The name of this file is    n0  x0 echo The name of this file is    nx0   And here is my test script    echo off echo  0 echo   0 echo  n0 echo  x0 echo   n0 echo  dp0 echo   dp0 pause   What I find interesting is that  nx0 won t work  given that we know the     char usually is used to strip trim quotes off of a variable

User · Answer

Yes     Use the special  0 variable to get the path to the current file     Write   n0 to get just the filename without the extension   Write   n0  x0 to get the filename and extension   Also possible to write   nx0 to get the filename and extension

User · Answer

Try to run below example in order to feel how the magical variables work    echo off  SETLOCAL EnableDelayedExpansion  echo Full path and filename    f0 echo Drive    d0 echo Path    p0 echo Drive and path    dp0 echo Filename without extension    n0 echo Filename with    extension    nx0 echo Extension    x0  echo date time     t0 echo file size    z0  ENDLOCAL   The related rules are following     I         - expands  I removing any surrounding quotes        fI        - expands  I to a fully qualified path name   dI        - expands  I to a drive letter only   pI        - expands  I to a path only   nI        - expands  I to a file name only   xI        - expands  I to a file extension only   sI        - expanded path contains short names only   aI        - expands  I to file attributes of file   tI        - expands  I to date time of file   zI        - expands  I to size of file    PATH I   - searches the directories listed in the PATH                environment variable and expands  I to the                fully qualified name of the first one found                 If the environment variable name is not                defined or the file is not found by the                search  then this modifier expands to the                empty string

[windows] Can a Windows batch file determine its own file name?

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