How can I check the size of a file in a Windows ba

Question

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 1

Another example

  FOR %I in (file1.txt) do @ECHO %~zI

Answer 2

This was my solution for evaluating file sizes without using VB/perl/etc. and sticking with native windows shell commands:

FOR /F "tokens=4 delims= " %%i in ('dir /-C %temp% ^| find /i "filename.txt"') do (  
    IF %%i GTR 1000000 (  
        echo filename.txt filesize is greater than 1000000  
    ) ELSE (  
        echo filename.txt filesize is less than 1000000  
    )
)  

Not the cleanest solution, but it gets the job done.

Answer 3

Just saw this old question looking to see if Windows had something built in. The ~z thing is something I didn't know about, but not applicable for me. I ended up with a Perl one-liner:

@echo off

set yourfile=output.txt
set maxsize=10000

perl -e "-s $ENV{yourfile} > $ENV{maxsize} ? exit 1 : exit 0"
rem if %errorlevel%. equ 1. goto abort
if errorlevel 1 goto abort

echo OK!
exit /b 0

:abort
echo Bad!
exit /b 1

Answer 4

After a few "try and test" iterations I've found a way (still not present here) to get size of file in cycle variable (not a command line parameter):

for %%i in (*.txt) do (
    echo %%~z%i
)

Answer 5

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
)

Answer 6

If your %file% is an input parameter, you may use %~zN, where N is the number of the parameter.

E.g. a test.bat containing

@echo %~z1

Will display the size of the first parameter, so if you use "test myFile.txt" it will display the size of the corresponding file.