压缩指定目录文件到指定目录的批处理【加上计划任务，可做定制备份】

@echo off 
set d=%date:~0,4%%date:~5,2%%date:~8,2% 
set winrar=C:\Program" "Files\WinRAR\WinRAR.exe
set srcDir=D:\wwwroot\wzzyw\wwwroot
set dstDir=D:\wwwroot\wzzyw\wwwrootbak\
set webPrefix= 
if not exist %dstDir%%d%.rar 
start %winrar% a -r %dstDir%%d%.rar %srcDir% 
@echo on