The Batch file below must be called with the number of days for old files to remove from today. For example, use 365 to remove 1 year old files.
@echo off
setlocal EnableDelayedExpansion
call :DateToJDN %date% oldDate= -%1
for /F "skip=5 tokens=1-4*" %%a in ('dir /A:-D /O:D') do (
call :DateToJDN %%a fileDate=
if !fileDate! lss %oldDate% (
del "%%e"
) else (
goto :EOF
)
)
goto :EOF
:DateToJDN Date JDN= [+-days]
for /F "tokens=1-3 delims=/" %%x in ("%1") do set /A mm=10%%x %% 100, dd=10%%y %% 100, yy=%%z
if %mm% lss 3 set /A mm+=12, yy-=1
set /A a=yy/100, b=a/4, c=2-a+b, e=36525*(yy+4716)/100, f=306*(mm+1)/10, %2=C+DD+E+F-1524%3
exit /B
If your %date% format is not MM/DD/YYYY, reorder mm, dd and yy variables in the first line of :DateToJDN subroutine.
