batch file to delete files older than a specified date [duplicate]

Answer 1

Edit: I figured it out.

To delete all files older than a given date:

REM del_old.bat
REM usage: del_old MM-DD-YYY
for /f "tokens=*" %%a IN ('xcopy *.* /d:%1 /L /I null') do if exist %%~nxa echo %%~nxa >> FILES_TO_KEEP.TXT
for /f "tokens=*" %%a IN ('xcopy *.* /L /I /EXCLUDE:FILES_TO_KEEP.TXT null') do if exist "%%~nxa" del "%%~nxa"

To delete all files newer than a given date:

REM del_new.bat
REM usage: del_new MM-DD-YYYY
for /f "tokens=*" %%a IN ('xcopy *.* /d:%1 /L /I null') do if exist "%%~nxa" del "%%~nxa"

Answer 2

eJames: I found your xcopy solution to work very well, indeed! The thing I like most about it is that it should work in Windows language versions other than English as well, since the format of the XCOPY parameters seems to be date-setting independent. Wonderful! ;]

One improvement would be to pre-create the FILES_TO_KEEP.TXT file so that if no file match the keep criteria, the second XCOPY statement can still go ahead and do the delete (it fails if it cannot find the FILES_TO_KEEP.TXT file). Here's my script (please note in this example I changed it to only delete *.pdf files and I also changed the temp file name to make more sure there are no potential conflicts, as well as cleaning up the temp file afterwards):

@echo off
SET OLDERTHAN=%1
IF NOT DEFINED OLDERTHAN GOTO SYNTAX

echo >> ~~~FILES_TO_KEEP.TXT~
for /f "tokens=*" %%a IN ('xcopy *.pdf /d:%1 /L /I null') do if exist %%~nxa echo %%~nxa >> ~~~FILES_TO_KEEP.TXT~
for /f "tokens=*" %%a IN ('xcopy *.pdf /L /I /EXCLUDE:~~~FILES_TO_KEEP.TXT~ null') do if exist "%%~nxa" del "%%~nxa"
del ~~~FILES_TO_KEEP.TXT~

GOTO END

:SYNTAX
ECHO.
ECHO USAGE:
ECHO DELOLD mm-dd-yyyy
ECHO   Where mm-dd-yyyy is the date prior to which you want to delete files.
ECHO.
ECHO EX: "DELOLD 10-17-2008" Deletes files older than October 17, 2008.
ECHO.
ECHO This should work on any language version of Windows, but has only been 
ECHO tested in English-US versions.
GOTO END

:END

Answer 3

My solution works if you

• either have a touch utility on your system (which I do)
• or can afford to temporarily change system date using date command (which is probably not the case, but who knows)

Here's the idea:

1. In the target directory, create a signal file (with a unique name), and with timestamp equal to your deletion threshold time. It can be done with touch (which accepts desired timestamp as a parameter), or by remembering current date with date /T, changing system date to desired with date <param>, and restoring the original date.

2. Use for /f %%I in ('dir /od') to iterate over all files ordered by date, deleting them one by one. After you encounter (and delete) the signal file, stop deleting.

Answer 4

Perhaps you would like this: http://blog.jumlin.com/2010/10/move-files-in-folders-and-subfolders-older-than-one-year/

Thats a script that will move files older than one year, it even supports various date formats and subfolders. You could make a few changes to make it delete instead of move them. Its a very complete script with comments and explanations.

Answer 5

I use this script:

////////////////////////////////////////////////////////
// Deletes file older than a number of days 
// in the current directory
////////////////////////////////////////////////////////
// Usage: wscript DeleteOlderThan.js [#Days]
// By default, remove files older than 30 days
////////////////////////////////////////////////////////

function removeDays(date, nDays)
{
    var dateRet = date
    return dateRet.setDate(date.getDate() - nDays);
}

function addSlash(strPath)
{
    var c = strPath.substr(-1, 1);
    if( c !== '\\' && c !== '/' )
    {
        strPath += '\\';
    }
    return strPath;
}

// Read arguments
var nDays = WScript.Arguments(0) || 30;

// Create system objects
var fs = WScript.CreateObject("Scripting.FileSystemObject");
var shell = WScript.CreateObject("WScript.Shell");

// Retrieve current directory
var strDirectoryPath = addSlash(shell.CurrentDirectory);

// Compute date
var dateNow = new Date();
var dateTest = removeDays(dateNow, nDays);

// Iterate on files
var folder = fs.GetFolder(strDirectoryPath);
var files = folder.Files;

for( var it = new Enumerator(files); !it.atEnd(); it.moveNext() )
{
    var file = it.item();

    if( file.DateLastModified < dateTest)
    {
        file.Delete(true);
    }
}

which I invoke every day with:

wscript "C:\Program Files\Utils\DeletesOlderThan.js" 30

Answer 6

I wonder why you have to use the ole DOS shell... Python or Windows Powershell would be the right choices in 2008 :)