Batch - Compare file date with actual date

问题

I get the file date from a file:

for %%x in (%file_test%) do set file_date_test=%%~tx

And then I get the system date:

set year=%date:~-4%
set month=%date:~3,2%
if "%month:~0,1%" == " " set month=0%month:~1,1%
set day=%date:~0,2%
if "%day:~0,1%" == " " set day=0%day:~1,1%

set hour=%time:~0,2%
if "%hour:~0,1%" == " " set hour=0%hour:~1,1%
set min=%time:~3,2%
if "%min:~0,1%" == " " set min=0%min:~1,1%

And then do an if statement with goto:

IF %file_date_test% LSS %system_date_test% goto SOME

How can I compare both dates? I would like to check if the file date has more than 24H.

Which is the best way to do that? Can I use forfiles to do it?

回答1:

Edited forfiles command will not even look at the hour of the file, so the previous answer (at the bottom in case someone find it useful) will not work if the file has different date but less than 24h.

For an alternative

robocopy "c:\backup" "c:\backup" "test.bak" /l /nocopy /is /minage:1 > nul 
if errorlevel 1 (
    echo MATCH
) else (
    echo NO_MATCH
)

At least in windows 7, the robocopy command look at the timestamp of the file to determine its age.

Previous answer

You can use forfiles checking the errorlevel of the operation

@echo off
    setlocal enableextensions disabledelayedexpansion

    set "file_test=c:\backups\test.bak"

    for %%a in ("%file_test%") do (
        forfiles /p "%%~dpa." /m "%%~nxa" /d -1 >nul 2>nul && echo MATCH || echo NO MATCH
    )

@echo off
    setlocal enableextensions disabledelayedexpansion

    forfiles /p "c:\backups" /m "test.bak" /d -1 >nul 2>nul
    if errorlevel 1 (
        echo NO_MATCH
    ) else (
        echo MATCH
    )

来源：https://stackoverflow.com/questions/31242124/batch-compare-file-date-with-actual-date

标签

date

batch-file

compare