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

你也许能搞定这件事。你可以看一下这个问题，一个更简单的例子。当你开始比较日期时，复杂性就来了。判断日期是否较大可能很容易，但如果需要实际获得两个日期之间的差异，则需要考虑许多情况。

换句话说，不要试图发明这个，除非你真的不能使用第三方工具。

我的脚本删除文件早于特定年份:

@REM _______ GENERATE A CMD TO DELETE FILES OLDER THAN A GIVEN YEAR
@REM _______ (given in _olderthanyear variable)
@REM _______ (you must LOCALIZE the script depending on the dir cmd console output)
@REM _______ (we assume here the following line's format "11/06/2017  15:04            58 389 SpeechToText.zip")

@set _targetdir=c:\temp
@set _olderthanyear=2017

@set _outfile1="%temp%\deleteoldfiles.1.tmp.txt"
@set _outfile2="%temp%\deleteoldfiles.2.tmp.txt"

  @if not exist "%_targetdir%" (call :process_error 1 DIR_NOT_FOUND "%_targetdir%") & (goto :end)

:main
  @dir /a-d-h-s /s /b %_targetdir%\*>%_outfile1%
  @for /F "tokens=*" %%F in ('type %_outfile1%') do @call :process_file_path "%%F" %_outfile2%
  @goto :end

:end
  @rem ___ cleanup and exit
  @if exist %_outfile1% del %_outfile1%
  @if exist %_outfile2% del %_outfile2%
  @goto :eof

:process_file_path %1 %2
  @rem ___ get date info of the %1 file path
  @dir %1 | find "/" | find ":" > %2
  @for /F "tokens=*" %%L in ('type %2') do @call :process_line "%%L" %1
  @goto :eof

:process_line %1 %2
  @rem ___ generate a del command for each file older than %_olderthanyear%
  @set _var=%1
  @rem  LOCALIZE HERE (char-offset,string-length)
  @set _fileyear=%_var:~0,4%
  @set _fileyear=%_var:~7,4%
  @set _filepath=%2
  @if %_fileyear% LSS %_olderthanyear% echo @REM %_fileyear%
  @if %_fileyear% LSS %_olderthanyear% echo @del %_filepath%
  @goto :eof

:process_error %1 %2
  @echo RC=%1 MSG=%2 %3
  @goto :eof

享受:

forfiles -p "C:\what\ever" -s -m *.* -d <number of days> -c "cmd /c del @path"

更多细节请参见forfiles文档。

要了解更多信息，请参考Windows XP命令行的A-Z索引。

如果您的计算机上没有安装forfiles，请将其从任何Windows Server 2003复制到您的Windows XP计算机的%WinDir%\system32\。这是可能的，因为EXE在Windows Server 2003和Windows XP之间完全兼容。

后续版本的Windows和Windows Server默认安装了它。

Windows 7及更新版本(包括Windows 10):

语法略有变化。因此更新后的命令为:

forfiles /p "C:\what\ever" /s /m *.* /D -<number of days> /C "cmd /c del @path"

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"

使用forfiles。

有不同的版本。早期使用unix风格的参数。

我的版本(用于服务器2000 -注意交换机后面没有空格)-

forfiles -p"C:\what\ever" -s -m*.* -d<number of days> -c"cmd /c del @path"

要将forfiles添加到XP，请从ftp://ftp.microsoft.com/ResKit/y2kfix/x86/获取exe

并将其添加到C:\WINDOWS\system32