MS Dos Batch delete old files in directory [duplic

问题:

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Closed 7 years ago.

Possible Duplicate:
Batch file to delete files older than N days

I'm trying to make a DoS Batch file to go through a directory with about 500,000 files in it, and i would like it to delete all the files older then 1 year

Here's my code so far

@echo off
title File Exclusion Act
for /f "usebackq delims=|" %%f in (`dir /b "C:\Users\Travis\Desktop\LotsOfFiles"`) do echo %%f
pause

So far it loops and prints out all the files in the specified directory.

Any tips/help is highly appreciated.

回答1:

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.