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这篇文章主要介绍windows中如何使用批处理备份目录，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
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以下是需要备份文件的一个bat 批处理脚本，备份昨天C:\Users\Administrator\Desktop\\111\2020\03\05目录下面的文件，
需要写一个批处理文件，首先考虑需要获取昨天的日期，以及创建一个日期的目录存放备份，查看要备份的文件个数文件的大小，
备份完的文件大小个数的多少 ，在进行前后的比较一下，代码如下：
rem: "author is czb"
rem: "create scripts time 2020-03-05"
@echo off
set date_time=%date:~0,4%%date:~5,2%%date:~8,2%_0%time:~1,1%%time:~3,2%%time:~6,2%
set suiji=%random%
echo initing...........
rem:"获取昨天的时间"
@echo off
set YE=%date:~0,4%
set MO=%date:~5,2%
set DA=%date:~8,2%
set DG=1
set/a vY1=%YE% %% 400
set/a vY2=%YE% %% 4
set/a vY3=%YE% %% 100
if %vY1%==0 (set var=true) else (if %vY2%==0 (if %vY3%==0 (set var=false) else (set var=true)) else (set var=false))
set LY=%YE%
set LM=%MO%
if %MO:~0,1%==0 (set MO=%MO:~1,1%)
if %DA:~0,1%==0 (set DA=%DA:~1,1%)
if %DA% GTR %DG% (set/a LD=%DA%-%DG%) else (
if %MO%==1 (set/a LY=%YE%-1) & (set/a LM=12) & (set/a LD=31+%DA%-%DG%) else (
set/a LM=%MO%-1
if %MO%==3 (if %var%==false (set/a LD=28+%DA%-%DG%) else (set/a LD=29+%DA%-%DG%))
for %%a in (2 4 6 8 9 11) do (if "%MO%"=="%%a" (set/a LD=31+%DA%-%DG%))
for %%b in (5 7 10 12) do (if "%MO%"=="%%b" (set/a LD=30+%DA%-%DG%))))
if %LM% LSS 10 set LM=0%LM:~-1%
if %LD% LSS 10 set LD=0%LD:~-1%
set strLstDt=%LY%%LM%%LD%
echo 昨天的日期为：%strLstDt%
echo.
rem:"dirPath定义预备份文件的路径（%LY%/%LM%/%LD% 固定格式） tarPath定义备份文件的路径 logpath定义备份时产生的日志路径"
set dirPath=C:\Users\Administrator\Desktop\新建文件夹\111\%LY%/%LM%/%LD%
set tarPath=C:\Users\Administrator\Desktop\新建文件夹
set logpath=C:\Users\Administrator\Desktop\新建文件夹\logs
rem:"查看预备份文件的个数以及大小"
cd %dirPath%
setlocal enabledelayedexpansion
set /a countbegin = 0
set /a file1sizebegin = 0
for /f %%i in ('dir /b /s /a-d') do (
set /a countbegin=countbegin+1
set /a file1sizebegin=file1sizebegin+%%~zi
)
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo 预备份目录%cd% 文件数：!countbegin!个 文件大小和：!file1sizebegin!个字节 >>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
)
popd
rem:"创建备份目录以及备份预备份的文件"
set str_time_first_bit="%time:~0,1%"
if %str_time_first_bit%==" " (
set str_date_time=%date:~0,4%%date:~5,2%%date:~8,2%_0%time:~1,1%%time:~3,2%%time:~6,2%
)else (
set str_date_time=%date:~0,4%%date:~5,2%%date:~8,2%_%time:~0,2%%time:~3,2%%time:~6,2%
)
echo The folder is about to be created: %strLstDt%_%suiji%_backups
set targetpath="%tarPath%"\%strLstDt%_%suiji%_backups
mkdir "%targetpath%"
set copytimebegin=%date:~0,4%-%date:~5,2%-%date:~8,2% %time:~0,2%:%time:~3,2%:%time:~6,2%
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo 创建要备份的目录: %targetpath% 成功 ！！！！ >>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
set a=%time%
echo 开始执行备份，开始备份的时间为%copytimebegin%>>%logpath%\"%strLstDt%_%suiji%".log
echo D|xcopy %dirPath%\*.* %targetpath% /s /q
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo 备份文件到 %targetpath% 成功 ！！！！>>%logpath%\%strLstDt%_%suiji%.log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
set copytimeend=%date:~0,4%-%date:~5,2%-%date:~8,2% %time:~0,2%:%time:~3,2%:%time:~6,2%
set b=%time%
echo 结束执行备份，结束备份的时间为%copytimeend%>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
rem:"查看备份文件的个数以及大小"
cd "%targetpath%"
setlocal enabledelayedexpansion
set /a count = 0
set /a file1size = 0
for /f %%i in ('dir /b /s /a-d') do (
set /a count=count+1
set /a file1size=file1size+%%~zi
)
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo 备份目录%cd% 文件数：!count!个 文件大小和：!file1size!个字节 >>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
)
popd
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
rem :"计算开始备份到结束备份总共花费的时间"
@echo off
set /a h2=%a:~0,2%
set /a m1=1%a:~3,2%-100
set /a s1=1%a:~6,2%-100
set /a h3=%b:~0,2%
set /a m2=1%b:~3,2%-100
set /a s2=1%b:~6,2%-100
if %h3% LSS %h2% set /a h3=%h3%+24
set /a ts1=%h2%*3600+%m1%*60+%s1%
set /a ts2=%h3%*3600+%m2%*60+%s2%
set /a ts=%ts2%-%ts1%
set /a h=%ts%/3600
set /a m=(%ts%-%h%*3600)/60
set /a s=%ts%%%60
echo 本次备份!count!个文件成功！！！备份总共耗时的时间为%h%小时%m%分%s%秒 >>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++>>%logpath%\"%strLstDt%_%suiji%".log
echo ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++>>%logpath%\"%strLstDt%_%suiji%".log
rem : 校验预备份文件与备份文件
if %countbegin% == %count% if %file1sizebegin% == %file1size% (echo 预备份文件的个数、文件的大小 与 备份文件的个数、大小相等，此备份校验成功 ！！！！>>%logpath%\"%strLstDt%_%suiji%".log)
else (
echo 此备份备份失败 ！！！！
)
echo ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++>>%logpath%\"%strLstDt%_%suiji%".log
echo ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
echo ===============================================================================================>>%logpath%\"%strLstDt%_%suiji%".log
exit
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