[BAT]在windows下快速刪除過期檔案
發表於 : 2012年 4月 1日, 20:52
在 linux 下有方便的 shell 指令可用, 在 windows 一下, 一樣有好用的指令 forfiles 可供應用, 若是要將某目錄下的檔案, 超過幾天以上的時間就要進行刪除(像是供份檔, log 檔案等), 可以利用以下指令:
上面的指令是利用 forfiles 將 c:\logs 目錄下, /D -7 指7天(含)前的檔案列舉出來, 而利用 /C "cmd /c del /f @file" 可以將列舉出來的檔案利用指令刪除. 若不放心指令的狀況, 可以使用 echo 指令列出檔案名, 如下:
利用 forfiles 可以方便地將想找尋某些條件的檔案列舉並進行刪除/搬移/複製等動作, 很方便在 batch 檔應用的指令.
以下為 forfiles 的指令用法, 是以 forfiles /? 查出:
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forfiles /p c:\logs /D -7 /C "cmd /c del /f @file"
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forfiles /p c:\logs /D -7 /C "cmd /c echo @file"
以下為 forfiles 的指令用法, 是以 forfiles /? 查出:
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FORFILES [/P pathname] [/M searchmask] [/S]
[/C command] [/D [+ | -] {MM/dd/yyyy | dd}]
Description:
Selects a file (or set of files) and executes a
command on that file. This is helpful for batch jobs.
Parameter List:
/P pathname Indicates the path to start searching.
The default folder is the current working
directory (.).
/M searchmask Searches files according to a searchmask.
The default searchmask is '*' .
/S Instructs forfiles to recurse into
subdirectories. Like "DIR /S".
/C command Indicates the command to execute for each file.
Command strings should be wrapped in double
quotes.
The default command is "cmd /c echo @file".
The following variables can be used in the
command string:
@file - returns the name of the file.
@fname - returns the file name without
extension.
@ext - returns only the extension of the
file.
@path - returns the full path of the file.
@relpath - returns the relative path of the
file.
@isdir - returns "TRUE" if a file type is
a directory, and "FALSE" for files.
@fsize - returns the size of the file in
bytes.
@fdate - returns the last modified date of the
file.
@ftime - returns the last modified time of the
file.
To include special characters in the command
line, use the hexadecimal code for the character
in 0xHH format (ex. 0x09 for tab). Internal
CMD.exe commands should be preceded with
"cmd /c".
/D date Selects files with a last modified date greater
than or equal to (+), or less than or equal to
(-), the specified date using the
"MM/dd/yyyy" format; or selects files with a
last modified date greater than or equal to (+)
the current date plus "dd" days, or less than or
equal to (-) the current date minus "dd" days. A
valid "dd" number of days can be any number in
the range of 0 - 32768.
"+" is taken as default sign if not specified.
/? Displays this help message.
Examples:
FORFILES /?
FORFILES
FORFILES /P C:\WINDOWS /S /M DNS*.*
FORFILES /S /M *.txt /C "cmd /c type @file | more"
FORFILES /P C:\ /S /M *.bat
FORFILES /D -30 /M *.exe
/C "cmd /c echo @path 0x09 was changed 30 days ago"
FORFILES /D 01/01/2001
/C "cmd /c echo @fname is new since Jan 1st 2001"
FORFILES /D +4/1/2012 /C "cmd /c echo @fname is new today"
FORFILES /M *.exe /D +1
FORFILES /S /M *.doc /C "cmd /c echo @fsize"
FORFILES /M *.txt /C "cmd /c if @isdir==FALSE notepad.exe @file"