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I need to be able to check a files filesize, and then do an if statement in a batch file

e.g. if file < 20KB start notepad, if > 20KB start wordpad

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  • possible duplicate of Windows command for file size only? Commented May 12, 2011 at 16:31
  • @Michael Burr No, this requires if statements as well Commented May 12, 2011 at 16:37

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@echo off SETLOCAL ENABLEEXTENSIONS if exist "%~f1" ( if %~z1 GEQ 20480 ( start "" "%ProgramFiles%\Windows NT\Accessories\wordpad.exe" "%~f1" ) else ( start notepad "%~f1" ) )

Edit: The %~z syntax only works for parameters and FOR loops, for a hardcoded name you can use a helper function:

@echo off SETLOCAL ENABLEEXTENSIONS goto main :getfilesize set %1=0 if exist "%~f2" set %1=%~z2 @goto :EOF :main set myfile=test.txt call :getfilesize mysize "%myfile%" if %mysize% GEQ 20480 ( start "" "%ProgramFiles%\Windows NT\Accessories\wordpad.exe" "%myfile%" ) else ( start notepad "%myfile%" )
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2 Comments

I would like to enter it e.g. it checks a predefined file to see if its 20kb or not
@James: I just used %1 (The first parameter) in the sample code (Yourbatch.cmd yourfile.txt)

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