我认为e.James的答案很好，因为它适用于早于Windows 2000 SP4(可能更早)的未修改版本的Windows，但它需要写入外部文件。下面是一个修改后的版本，在保持兼容性的同时不创建外部文本文件:

REM del_old.cmd
REM usage: del_old MM-DD-YYYY
setlocal enabledelayedexpansion
for /f "tokens=*" %%a IN ('xcopy *.* /d:%1 /L /I null') do @if exist "%%~nxa" set "excludefiles=!excludefiles!;;%%~nxa;;"
for /f "tokens=*" %%a IN ('dir /b') do @(@echo "%excludefiles%"|FINDSTR /C:";;%%a;;">nul || if exist "%%~nxa" DEL /F /Q "%%a">nul 2>&1)

为了忠于最初的问题，如果你用天数作为参数调用它，它在一个脚本中为你做了所有的数学运算:

REM del_old_compute.cmd
REM usage: del_old_compute N
setlocal enabledelayedexpansion
set /a days=%1&set cur_y=%DATE:~10,4%&set cur_m=%DATE:~4,2%&set cur_d=%DATE:~7,2%
for /f "tokens=1 delims==" %%a in ('set cur_') do if "!%%a:~0,1!"=="0" set /a %%a=!%%a:~1,1!+0
set mo_2=28&set /a leapyear=cur_y*10/4
if %leapyear:~-1% equ 0 set mo_2=29
set mo_1=31&set mo_3=31&set mo_4=30&set mo_5=31
set mo_6=30&set mo_7=31&set mo_8=31&set mo_9=30
set mo_10=31&set mo_11=30&set mo_12=31
set /a past_y=(days/365)
set /a monthdays=days-((past_y*365)+((past_y/4)*1))&&set /a past_y=cur_y-past_y&set months=0
:setmonth
set /a minusmonth=(cur_m-1)-months
if %minusmonth% leq 0 set /a minusmonth+=12
set /a checkdays=(mo_%minusmonth%)
if %monthdays% geq %checkdays% set /a months+=1&set /a monthdays-=checkdays&goto :setmonth
set /a past_m=cur_m-months
set /a lastmonth=cur_m-1
if %lastmonth% leq 0 set /a lastmonth+=12
set /a lastmonth=mo_%lastmonth%
set /a past_d=cur_d-monthdays&set adddays=::
if %past_d% leq 0 (set /a past_m-=1&set adddays=)
if %past_m% leq 0 (set /a past_m+=12&set /a past_y-=1)
set mo_2=28&set /a leapyear=past_y*10/4
if %leapyear:~-1% equ 0 set mo_2=29
%adddays%set /a past_d+=mo_%past_m%
set d=%past_m%-%past_d%-%past_y%
for /f "tokens=*" %%a IN ('xcopy *.* /d:%d% /L /I null') do @if exist "%%~nxa" set "excludefiles=!excludefiles!;;%%~nxa;;"
for /f "tokens=*" %%a IN ('dir /b') do @(@echo "%excludefiles%"|FINDSTR /C:";;%%a;;">nul || if exist "%%~nxa" DEL /F /Q "%%a">nul 2>&1)

注意:上面的代码考虑了闰年，以及每个月的确切天数。唯一的最大值是从0/0/0开始的总天数(之后返回负年份)。

注意:数学只是单向的;它不能从负输入中正确地获得未来的日期(它会尝试，但可能会超过本月的最后一天)。

复制这段代码并保存为DelOldFiles.vbs。

使用CMD: cscript //nologo DelOldFiles。于六月15日

“15”表示删除超过15天的文件。

  'copy from here
    Function DeleteOlderFiles(whichfolder)
       Dim fso, f, f1, fc, n, ThresholdDate
       Set fso = CreateObject("Scripting.FileSystemObject")
       Set f = fso.GetFolder(whichfolder)
       Set fc = f.Files
       Set objArgs = WScript.Arguments
       n = 0
       If objArgs.Count=0 Then
           howmuchdaysinpast = 0
       Else
           howmuchdaysinpast = -objArgs(0)
       End If
       ThresholdDate = DateAdd("d", howmuchdaysinpast, Date)   
       For Each f1 in fc
     If f1.DateLastModified<ThresholdDate Then
        Wscript.StdOut.WriteLine f1
        f1.Delete
        n = n + 1    
     End If
       Next
       Wscript.StdOut.WriteLine "Deleted " & n & " file(s)."
    End Function

    If Not WScript.FullName = WScript.Path & "\cscript.exe" Then
      WScript.Echo "USAGE ONLY IN COMMAND PROMPT: cscript DelOldFiles.vbs 15" & vbCrLf & "15 means to delete files older than 15 days in past."
      WScript.Quit 0   
    End If

    DeleteOlderFiles(".")
 'to here

删除所有超过3天的文件

forfiles -p "C:\folder" -m *.* -d -3 -c "cmd  /c del /q @path"

删除超过3天的目录

forfiles -p "C:\folder" -d -3 -c "cmd  /c IF @isdir == TRUE rd /S /Q @path"

对于windows 2012 R2，以下将工作:

    forfiles /p "c:\FOLDERpath" /d -30 /c "cmd /c del @path"

要查看将要删除的文件，请使用此命令

    forfiles /p "c:\FOLDERpath" /d -30 /c "cmd /c echo @path @fdate"

这没什么了不起的，但我今天需要做这样的事情，并按照预定的任务等运行它。

批处理文件，DelFilesOlderThanNDays.bat下面的示例exec w/ params:

DelFilesOlderThanNDays.bat 7 C:\dir1\dir2\dir3\logs *.log

echo off
cls
Echo(
SET keepDD=%1
SET logPath=%2 :: example C:\dir1\dir2\dir3\logs
SET logFileExt=%3
SET check=0
IF [%3] EQU [] SET logFileExt=*.log & echo: file extention not specified (default set to "*.log")
IF [%2] EQU [] echo: file directory no specified (a required parameter), exiting! & EXIT /B 
IF [%1] EQU [] echo: number of days not specified? :)
echo(
echo: in path [ %logPath% ]
echo: finding all files like [ %logFileExt% ]
echo: older than [ %keepDD% ] days
echo(
::
::
:: LOG
echo:  >> c:\trimLogFiles\logBat\log.txt
echo: executed on %DATE% %TIME% >> c:\trimLogFiles\logBat\log.txt
echo: ---------------------------------------------------------- >> c:\trimLogFiles\logBat\log.txt
echo: in path [ %logPath% ] >> c:\trimLogFiles\logBat\log.txt
echo: finding all files like [ %logFileExt% ] >> c:\trimLogFiles\logBat\log.txt
echo: older than [ %keepDD% ] days >> c:\trimLogFiles\logBat\log.txt
echo: ---------------------------------------------------------- >> c:\trimLogFiles\logBat\log.txt
::
FORFILES /p %logPath% /s /m %logFileExt% /d -%keepDD% /c "cmd /c echo @path" >> c:\trimLogFiles\logBat\log.txt 2<&1
IF %ERRORLEVEL% EQU 0 (
 FORFILES /p %logPath% /s /m %logFileExt% /d -%keepDD% /c "cmd /c echo @path"
)
::
::
:: LOG
IF %ERRORLEVEL% EQU 0 (
 echo:  >> c:\trimLogFiles\logBat\log.txt
 echo: deleting files ... >> c:\trimLogFiles\logBat\log.txt
 echo:  >> c:\trimLogFiles\logBat\log.txt
 SET check=1
)
::
::
IF %check% EQU 1 (
 FORFILES /p %logPath% /s /m %logFileExt% /d -%keepDD% /c "cmd /c del @path"
)
::
:: RETURN & LOG
::
IF %ERRORLEVEL% EQU 0 echo: deletion successfull! & echo: deletion successfull! >> c:\trimLogFiles\logBat\log.txt
echo: ---------------------------------------------------------- >> c:\trimLogFiles\logBat\log.txt

ROBOCOPY很适合我。最初建议我的伊曼。但是，与其将文件/文件夹移动到临时目录，然后删除临时文件夹的内容，不如将文件移动到垃圾桶!!

这是几行我的备份批处理文件的例子:

SET FilesToClean1=C:\Users\pauls12\Temp
SET FilesToClean2=C:\Users\pauls12\Desktop\1616 - Champlain\Engineering\CAD\Backups

SET RecycleBin=C:\$Recycle.Bin\S-1-5-21-1480896384-1411656790-2242726676-748474

robocopy "%FilesToClean1%" "%RecycleBin%" /mov /MINLAD:15 /XA:SH /NC /NDL /NJH /NS /NP /NJS
robocopy "%FilesToClean2%" "%RecycleBin%" /mov /MINLAD:30 /XA:SH /NC /NDL /NJH /NS /NP /NJS

它可以清除“Temp”文件夹中超过15天的文件，以及AutoCAD备份文件夹中超过30天的文件。我使用变量是因为行可以很长，我可以在其他位置重用它们。您只需要找到与您的登录相关联的回收站的dos路径。

这是在我的工作电脑上运行的。我知道你们中的一些人可能有更严格的权利，但无论如何都要尝试一下;)ROBOCOPY参数说明请在“谷歌”中查询。

干杯!