How can I check the size of a file in a Windows batch script?

batch-file filesize
Deniz Zoeteman picture Deniz Zoeteman · Jul 29, 2009 · Viewed 220k times · Source

I want to have a batch file which checks what the filesize is of a file.

If it is bigger than %somany% kbytes, it should redirect with GOTO to somewhere else.

Example:

[check for filesize]
IF %file% [filesize thing Bigger than] GOTO No
echo Great! Your filesize is smaller than %somany% kbytes.
pause
exit
:no
echo Um... You have a big filesize.
pause
exit

Answer

Anders picture Anders · Jul 29, 2009

If the file name is used as a parameter to the batch file, all you need is %~z1 (1 means first parameter)

If the file name is not a parameter, you can do something like:

@echo off
setlocal
set file="test.cmd"
set maxbytesize=1000

FOR /F "usebackq" %%A IN ('%file%') DO set size=%%~zA

if %size% LSS %maxbytesize% (
    echo.File is ^< %maxbytesize% bytes
) ELSE (
    echo.File is ^>= %maxbytesize% bytes
)

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