@echo off
setlocal
set srcDir="c:\sourcedir"
set dirMask=*.*
if not "%1"=="" set srcDir=%1
if not exist "%srcDir%" echo Directory %srcDir% does not exist.&goto :EOF
call :GETPARTS "%date%
call :SUBTRACTDAYS 7
set cutoffDate=%yy%/%mm%/%dd%
pushd.
cd /D %srcDir%
for /f "delims=" %%a in ('dir /b /s /a %dirMask%') do call :PROCESS "%%a" %%~ta
popd
goto :EOF
:PROCESS
call :GETPARTS %2
REM ** Remove echo from the statement below to enable the actual process
if /i "%cutoffDate%" GTR "%yy%/%mm%/%dd%" del /q %1
goto :EOF
:SUBTRACTDAYS
set dayCnt=%1
if "%dayCnt%"=="" set dayCnt=1
REM Substract your days here
set /A dd=1%dd% - 100 - %dayCnt%
set /A mm=1%mm% - 100
:CHKDAY
if /I %dd% GTR 0 goto DONESUBTRACT
set /A mm=%mm% - 1
if /I %mm% GTR 0 goto ADJUSTDAY
set /A mm=12
set /A yy=%yy% - 1
:ADJUSTDAY
if %mm%==1 goto SET31
if %mm%==2 goto LEAPCHK
if %mm%==3 goto SET31
if %mm%==4 goto SET30
if %mm%==5 goto SET31
if %mm%==6 goto SET30
if %mm%==7 goto SET31
if %mm%==8 goto SET31
if %mm%==9 goto SET30
if %mm%==10 goto SET31
if %mm%==11 goto SET30
REM ** Month 12 falls through
:SET31
set /A dd=31 + %dd%
goto CHKDAY
:SET30
set /A dd=30 + %dd%
goto CHKDAY
:LEAPCHK
set /A tt=%yy% %% 4
if not %tt%==0 goto SET28
set /A tt=%yy% %% 100
if not %tt%==0 goto SET29
set /A tt=%yy% %% 400
if %tt%==0 goto SET29
:SET28
set /A dd=28 + %dd%
goto CHKDAY
:SET29
set /A dd=29 + %dd%
goto CHKDAY
:DONESUBTRACT
if /I %mm% LSS 10 set mm=0%mm%
if /I %dd% LSS 10 set dd=0%dd%
goto :EOF
:GETPARTS
set dt=%~1
set tok=1-3
if "%dt:~0,1%" GTR "9" set tok=2-4
set yyyy=
for /f "tokens=%tok% delims=.:/-, " %%a in ('echo %~1') do (
for /f "skip=1 tokens=2-4 delims=/-,()." %%x in ('echo.^|date') do set %%x=%%a&set %%y=%%b&set %%z=%%c
)
if not "%yyyy%"=="" set yy=%yyyy%
if 1%yy% LSS 1000 (if %yy% LSS 70 (set yy=20%yy%) else (set yy=19%yy%))
if 1%mm% LSS 100 set mm=0%mm%
if 1%dd% LSS 100 set dd=0%dd%
goto :EOF
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