for loop - Use of relational operators when reading a file from CMD -

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i trying create command line program outputs numbers file greater (larger than) specified one. there's file output.txt lots of numbers (one per line) , need ones less 5000.

here's part of code, doesn't work expected:

choice /c 12  set /p comparative_number="input number: "  if %errorlevel%==2 goto less_operation  /f %%a in (%outputfile%) if %%a gtr %comparative_number% echo %%a  echo. & echo end of output & exit /b  :less_operation  /f %%a in (%outputfile%) if %%a lss %comparative_number% echo %%a  echo. & echo end of output & exit /b

what doing wrong?

the command extensions enabled default. if batch script depends on command extensions when using gtr , lss in if condition advisable enable them explicitly.

the integer numbers must listed in file referenced via environment variable outputfile line line, example:

50 23 478 -3425 9071

a batch code worked:

@echo off setlocal enableextensions set "outputfile=c:\temp\file numbers listed line line.txt"  echo. echo please choose comparison: echo. echo 1 ... greater echo 2 ... smaller echo. choice /c:12 /n /m "your choice: " echo.  set "comparative_number=0" set /p "comparative_number=input number: " echo. if %errorlevel%==2 goto less_operation  /f "usebackq" %%a in ("%outputfile%") if %%a gtr %comparative_number% echo %%a echo. echo end of output endlocal exit /b  :less_operation /f "usebackq" %%a in ("%outputfile%") if %%a lss %comparative_number% echo %%a echo. echo end of output endlocal exit /b

why code not work in comparison modified code depends on name of output file, how numbers listed in output file , how have used command choice.


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