How to set a variable inside a loop for /F

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There are two methods to setting and using variables within for loops and parentheses scope.

  1. setlocal enabledelayedexpansion see setlocal /? for help. This only works on XP/2000 or newer versions of Windows.
    then use !variable! instead of %variable% inside the loop…

  2. Create a batch function using batch goto labels :Label.

    Example:

    for /F "tokens=*" %%a in ('type %FileName%') do call :Foo %%a
goto End

:Foo
set z=%1
echo %z%
echo %1
goto :eof

:End

    Batch functions are very useful mechanism.

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