本文来自百度经验：http://jingyan.baidu.com/article/86112f1344c25427379787f5.html

@echo off
echo 正在清除系统垃圾文件，请稍等......
del /f /s /q  %systemdrive%\*.tmp
del /f /s /q  %systemdrive%\*._mp
del /f /s /q  %systemdrive%\*.log
del /f /s /q  %systemdrive%\*.gid
del /f /s /q  %systemdrive%\*.chk
del /f /s /q  %systemdrive%\*.old
del /f /s /q  %systemdrive%\recycled\*.*
del /f /s /q  %windir%\*.bak
del /f /s /q  %windir%\prefetch\*.*
rd /s /q %windir%\temp & md  %windir%\temp
del /f /q  %userprofile%\cookies\*.*
del /f /q  %userprofile%\recent\*.*
del /f /s /q  "%userprofile%\Local Settings\Temporary Internet Files\*.*"
del /f /s /q  "%userprofile%\Local Settings\Temp\*.*"
del /f /s /q  "%userprofile%\recent\*.*"
echo 清除系统垃圾完成！
echo. & pause