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

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

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。

扩展aku的回答，我看到很多人在问北卡大学的路径。简单地将unc路径映射到驱动器号将使forfiles高兴。例如，驱动器的映射和取消映射可以在批处理文件中以编程方式完成。

net use Z: /delete
net use Z: \\unc\path\to\my\folder
forfiles /p Z: /s /m *.gz /D -7 /C "cmd /c del @path"

这将删除所有扩展名为.gz且超过7天的文件。如果你想确保Z:在使用它之前没有映射到任何其他东西，你可以做一些简单的事情

net use Z: \\unc\path\to\my\folder
if %errorlevel% equ 0 (
    forfiles /p Z: /s /m *.gz /D -7 /C "cmd /c del @path"
) else (
    echo "Z: is already in use, please use another drive letter!"
)

更灵活的方法是使用FileTimeFilterJS.bat:

@echo off

::::::::::::::::::::::
set "_DIR=C:\Users\npocmaka\Downloads"
set "_DAYS=-5"
::::::::::::::::::::::

for /f "tokens=* delims=" %%# in ('FileTimeFilterJS.bat  "%_DIR%" -dd %_DAYS%') do (
    echo deleting  "%%~f#"
    echo del /q /f "%%~f#"
)

该脚本将允许您使用诸如日、分、秒或小时等测量。 选择weather按创建、访问或修改时间筛选文件 列出某个日期之前或之后(或两个日期之间)的文件 选择是显示文件还是dirs(或两者都显示) 递归与否

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"