怎么实现服务器中的文件差异备份
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使用小巧强大的7z(不到1M),实现差异文件备份.
::This script backup the data from srvdatacn01 ::It's an ancremental backups tools, One base file and diff files for each day. ::The files be deleted at srvdatacn01 are still keep saved at archived diff files, until them be deleted. ::Make sure you DateTime format is "yyyy-mm-dd", which could be use as one filenme(exclude / \ * :) ::Add C:\Program Files\7-Zip\ to environment variables path :: Delete the diff archive files which over 7 days :: Command forfiles doesn't support UNC path, so need map the path to driver first if not exist \\srvdatacn02\d ( NET USE Y: \\srvdatacn02\d ) forfiles /P Y: /M backup_srvdatacn01*diff*.zip /C "cmd /c del /q/f @path" /D -7 NET USE Y: /D call :backup "folder1","folder2","folder3","folder4","folder5" :backup for %%i in (%*) do ( if not exist "d:\backup_srvdatacn01_%%~i_base.7z" ( 7z a "d:\backup_srvdatacn01_%%~i_base.7z" "\\srvdatacn01\%%~i\*" -xr!Thumbs.db -mx9 ) else ( 7z u "d:\backup_srvdatacn01_%%~i_base.7z" "\\srvdatacn01\%%~i\*" -u- -up0q1r2x2y2z0w0!"d:\backup_srvdatacn01_%%~i_diff_%date:/=_%_%time::=_%.7z" -xr!Thumbs.db -mx9 7z u "d:\backup_srvdatacn01_%%~i_base.7z" "\\srvdatacn01\%%~i\*" -up0q0r2x2y2z1w1 -xr!Thumbs.db -mx9 ) ) goto:eof
** forfiles 需要使用盘符映射**
删除N天以前的文件
forfiles /P Y: /M backup_srvdatacn01*diff*.zip /C "cmd /c del /q/f @path" /D -7
将差异文件写入diff包
7z u "d:\backup_srvdatacn01_%%~i_base.7z" "\\srvdatacn01\%%~i\*" -u- -up0q1r2x2y2z0w0!"d:\backup_srvdatacn01_%%~i_diff_%date:/=_%_%time::=_%.7z" -xr!Thumbs.db -mx9
更新基础包
7z u "d:\backup_srvdatacn01_%%~i_base.7z" "\\srvdatacn01\%%~i\*" -up0q0r2x2y2z1w1 -xr!Thumbs.db -mx9
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