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

这个在7daysclean上的修改怎么样?CMD要把闰年考虑进去吗?

它可以在不到10行代码中完成!

set /a Leap=0
if (Month GEQ 2 and ((Years%4 EQL 0 and Years%100 NEQ 0) or Years%400 EQL 0)) set /a Leap=day
set /a Months=!_months!+Leap

Mofi编辑:

由于语法无效，由J.R.提供的上述条件总是计算为false。

GEQ 2月份也是错误的，因为在闰年里，只有3月到12月必须增加86400秒来增加一天，而2月则不行。

在批处理文件7天清理中考虑闰日的工作代码-仅在当前年份。Jay发布的cmd将是:

set "LeapDaySecs=0"
if %Month% LEQ 2 goto CalcMonths
set /a "LeapRule=Years%%4"
if %LeapRule% NEQ 0 goto CalcMonths
rem The other 2 rules can be ignored up to year 2100.
set /A "LeapDaySecs=day"
:CalcMonths
set /a Months=!_months!+LeapDaySecs

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

在我看来，JavaScript正在逐渐成为一种通用的脚本标准:它可能比任何其他脚本语言都适用于更多的产品(在Windows中，可以使用Windows脚本主机)。我必须清理旧文件在很多文件夹，所以这里是一个JavaScript函数来做:

// run from an administrator command prompt (or from task scheduler with full rights):  wscript jscript.js
// debug with:   wscript /d /x jscript.js

var fs = WScript.CreateObject("Scripting.FileSystemObject");

clearFolder('C:\\temp\\cleanup');

function clearFolder(folderPath)
{
    // calculate date 3 days ago
    var dateNow = new Date();
    var dateTest = new Date();
    dateTest.setDate(dateNow.getDate() - 3);

    var folder = fs.GetFolder(folderPath);
    var files = folder.Files;

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

        if( file.DateLastModified < dateTest)
        {
            var filename = file.name;
            var ext = filename.split('.').pop().toLowerCase();

            if (ext != 'exe' && ext != 'dll')
            {
                file.Delete(true);
            }
        }
    }

    var subfolders = new Enumerator(folder.SubFolders);
    for (; !subfolders.atEnd(); subfolders.moveNext())
    {
        clearFolder(subfolders.item().Path);
    }
}

对于每个要清除的文件夹，只需要对clearFolder()函数添加另一个调用。这个特定的代码还保存exe和dll文件，并清理子文件夹。

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