What is the best way to do a substring in a batch file

Question

I want to get the name of the currently running batch file without the file extension     Thanks to this link  I have the file name with the extension    but what is the best way to do a substring in a batch file   Or is there another way to get the file name w o the extension   It is safe to assume 3 letter extensions in this scenario

User · Answer

Nicely explained above   For all those who may suffer like me to get this working in a localized Windows  mine is XP in Slovak   you may try to replace the   with a    So     SET TEXT Hello World SET SUBSTRING  TEXT  3 5  ECHO  SUBSTRING

User · Answer

Well  for just getting the filename of your batch the easiest way would be to just use   n0    echo   n0   will output the name  without the extension  of the currently running batch file  unless executed in a subroutine called by call   The complete list of such    special    substitutions for path names can be found with help for  at the very end of the help      In addition  substitution of FOR   variable references has been enhanced    You can now use the following optional   syntax     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       The modifiers can be combined to get   compound results     dpI       - expands  I to a drive letter and path only   nxI       - expands  I to a file name and extension only   fsI       - expands  I to a full path name with short names only    To precisely answer your question  however  Substrings are done using the   start length notation     var  10 5    will extract 5 characters from position 10 in the environment variable  var    NOTE  The index of the strings is zero based  so the first character is at position 0  the second at 1  etc   To get substrings of argument variables such as  0   1  etc  you have to assign them to a normal environment variable using set first      Does not work   echo  1  10 5     Assign argument to local variable first  set var  1  echo  var  10 5    The syntax is even more powerful      var  -7  extracts the last 7 characters from  var    var  0 -4  would extract all characters except the last four which would also rid you of the file extension  assuming three characters after the period         See help set for details on that syntax

User · Answer

As an additional info to Joey s answer  which isn t described in the help of set    nor for          0 expands to the name of the own batch  exactly as it was typed  So if you start your batch it will be expanded as    0   - mYbAtCh   n0  - mybatch   nx0 - mybatch bat   But there is one exception  expanding in a subroutine could fail  echo main-   0 call  myFunction exit  b   myFunction echo func -   0 echo func -   n0 exit  b   This results to  main - myBatch Func -  myFunction func - mybatch   In a function   0 expands always to the name of the function  not of the batch file  But if you use at least one modifier it will show the filename again

[batch-file] What is the best way to do a substring in a batch file?

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