bat 实现批量备份文件

小咪咪 2022-09-28 15:27 341阅读 0赞

本人之前用powershell 写了1个备份文件的脚本

http://blog.csdn.net/nvd11/article/details/58375519

但是由于巨量问下搜索的性能问题..(原来powershell是.net写出来的，真是垃圾)， 不得不用bat重写了..

需求跟原来的是一样的：

需求1： 检查每个文件的修改时间， 如果小于日期参数， 则备份（和删除）；

需求2：保留被备份文件的目录结构。

windows bat下的forfiles还能一用， 当然用起来不能跟linux的find比

archive.bat

@echo off
    setlocal enabledelayedexpansion
    set sPathFrom=%1 
    set sPathTo=%2
    set iDaysBefore=%3
    
    set cnt=0
    :loop
    if "%1"=="" (echo %cnt%) else (set /a cnt+=1&shift /1&goto :loop)
    
    if %cnt% lss 3 (
      echo Usage: %0 ^<^<Source Path^>^> ^<^<Destination Path^>^> ^<^<beforeDate^>^>
      goto errorEnd
    )
    
    set sDateToday=%DATE:~0,10%
    set sLogPath=%cd%\logs
    set sLogFile=%sLogPath%\archive%sDateToday%.log
    
    if exist %sLogPath% (
      	echo log path is existed!
    ) else (
      	md  %sLogPath%
    ) 
    
    rem replace / to -
    set sLogFile=%sLogFile:/=-%
    echo log file is %sLogFile%
    
    echo source path is %sPathFrom% >> %slogFile%
    echo Destination path is %sPathTo% >> %sLogFile%
    echo archive files whose modified date is before %iDaysBefore% days>> %slogFile%
    
    rem get the string len...
    set n=0
    :her
    set u=!sPathFrom:~%n%,1!
    if not "!u!"=="" (set/a n+=1
    goto her
    ) 
    
    forfiles /p %sPathFrom% /s /d %iDaysBefore% /c "cmd /c %cd%\archiveCore.bat @path %sPathTo% %n% >> %slogFile%"
    
    rem exit 0;
    
    :errorEnd
    rem exit -1;

archiveCore.bat 这个被上面的调用

@echo off
    setlocal enabledelayedexpansion
    
    set sFileFullName=%~1
    set sFileName=%~n1%~x1
    set sPathTo=%2
    set lenGap=%3
    
    rem get the string len...
    set n=0
    :her
    set u=!sFileName:~%n%,1!
    if not "!u!"=="" (set/a n+=1
    goto her
    ) 
    
    set iNameLen=%n%
    
    
    echo %sFileFullName%
    echo %sPathTo%
    rem echo %lenGap%
    
    set sFilePathTo=%sPathTo%\!sFileFullName:~%lenGap%!
    set sPathTo=!sFilePathTo:~0,-%iNameLen%!
    
    rem echo %sFilePathTo%
    rem echo %sPathTo%
    
    if exist %sPathTo% (
        echo path is existed!
    ) else (
        echo creating folder %sPathTo%
        md  %sPathTo%
    ) 
    
    
    if exist %sFileFullName%\nul (
      rem it's a folder
      if exist %sFilePathTo% (
          echo path is existed!
      ) else (
          echo creating folder %sFilePathTo%
          md  %sFilePathTo%
      ) 
    ) else (
      echo copying %sFileFullName% To %sPathTo%
    
      rem pause
      xcopy /y %sFileFullName% %sPathTo%
    
      echo removing %sFileFullName%
      del %sFileFullName%
    )

最后吐个槽， bat下字符串长度的方法要自己写， 真是mdzz！

还有1个日期处理是坨屎