批处理的方式实现定时备份

@echo off

Color a9

rem rarPath:WINRAR安装路径
set rarPath="E:Program FilesWinRARWinRAR.exe"
echo WINRAR安装路径是：%rarPath%

rem currentDate:获取的当前日期字符串
for /f "tokens=1,2,3 delims=/- " %%a in ("%date%") do @set currentDateNow=%%a%%b%%c
echo 获取的当前日期字符串是：%currentDateNow%

@echo off
rem 计算指定天数之前的日期
set DaysAgo=2
rem 假设系统日期的格式为yyyymmdd
call :DateToDays %date:~0,4% %date:~5,2% %date:~8,2% PassDays
set /a PassDays-=%DaysAgo%
call :DaysToDate %PassDays% DstYear DstMonth DstDay
set currentDate=%DstYear%%DstMonth%%DstDay%
echo 获取的%DaysAgo%天的日期是%currentDate%

rem workPath:工作路径
set workPath="D:WorkOrderEngineWorkOrderEnginecsv"
echo 工作路径是：%workPath%

rem bakPath:备份文件夹
set bakPath="D:WorkOrderEngineWorkOrderEnginecsv%currentDate%"
echo 备份文件夹是：%bakPath%

echo 开始生成备份文件夹
md %bakPath%

echo 开始复制文件到备份文件夹
if exist %workPath%*%currentDate%.csv copy %workPath%*%currentDate%.csv %bakPath%\

echo 开始备份
%rarPath% a -ibck -m5 %bakPath%.rar %bakPath%

echo 备份完成

Pause

:DateToDays %yy% %mm% %dd% days
setlocal ENABLEEXTENSIONS
set yy=%1&set mm=%2&set dd=%3
if 1%yy% LSS 200 if 1%yy% LSS 170 (set yy=20%yy%) else (set yy=19%yy%)
set /a dd=100%dd%%%100,mm=100%mm%%%100
set /a z=14-mm,z/=12,y=yy+4800-z,m=mm+12z-3,j=153m+2
set /a j=j/5+dd+y*365+y/4-y/100+y/400-2472633
endlocal&set %4=%j%&goto :EOF

:DaysToDate %days% yy mm dd
setlocal ENABLEEXTENSIONS
set /a a=%1+2472632,b=4a+3,b/=146097,c=-b146097,c/=4,c+=a
set /a d=4c+3,d/=1461,e=-1461d,e/=4,e+=c,m=5e+2,m/=153,dd=153m+2,dd/=5
set /a dd=-dd+e+1,mm=-m/10,mm=12,mm+=m+3,yy=b100+d-4800+m/10
(if %mm% LSS 10 set mm=0%mm%)&(if %dd% LSS 10 set dd=0%dd%)
endlocal&set %2=%yy%&set %3=%mm%&set %4=%dd%&goto :EOF