@echo off 
echo 正在从下面复制文件，清稍候…… 
if %DATE:~9,2%=="1"goto Change 
set aFile=%DATE:~4,4%-%DATE:~9,2%-1-%DATE:~12,2% 

:Change 
set aFile=%DATE:~4,4%-1-%DATE:~9,2%+11-%DATE:~12,2% 

echo %aFile% 

xcopy /e /c /f /h /k /y /d:aFile "C:\Documents and Settings\feng_xu\デスクトップ" "D:\z\" 
echo 复制完成 
cls 
echo 全部命令成功的完成了！
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@echo off 
setlocal enabledelayedexpansion 
Rem 取30天之前的日期，取回放入变量riqi 
echo wscript.echo dateadd("d",-30,date) >%tmp%\tmp.vbs 
for /f "tokens=1,2,3* delims=-" %%i in ('cscript /nologo %tmp%\tmp.vbs') do set y=%%i&set m=%%j&set d=%%k 
if %m% LSS 10 set m=0%m% 
if %d% LSS 10 set d=0%d% 
set riqi=%y%%m%%d% 

set "mulu=g:\a\kg" 
for /f "eol= skip=4 tokens=1,4" %%a in ('dir /a-d /tw "%mulu%"^|find /v ^"字节^"') do ( 
set delrq=%%a 
set delrq=!delrq:-=! 
if !delrq! lss %riqi% ( 
copy "%mulu%\%%~nxb" "e:\temp\" 
) 
) 
pause 

里面的文件路径自己改改就成了.呵呵..花了点时间帮你写了个.恩 
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