windows批处理

1.日期作为变量当做文件名的一部分.

C:\Documents and Settings\Simon>echo %date%
2008-09-09 星期二

C:\Documents and Settings\Simon>echo %date:~5,5%
09-09

如果我们需要加入自订的分隔符，比如想要YYYY--MM--DD的格式，只需要分别取出YYYY, MM, DD再连接起来即可：
C:\Documents and Settings\Simon>echo %date:~0,4%--%date:~5,2%--%date:~8,2%
2008--09—09

2.命令选择

C:\Users\hp>choice /c dme /m defrag,mem,end
defrag,mem,end [D,M,E]?D

@echo off
            choice /c dme /m defrag,mem,end
            if errorlevel 3 goto defrag （应先判断数值最高的错误码）
            if errorlevel 2 goto mem
            if errotlevel 1 goto end

:defrag
            c:dosdefrag
            goto end

:mem
            mem
            goto end

:end
            echo good bye

3.错误判断

@net use /%1ipc$ %3 /u:"%2"
           @if errorlevel 1 goto failed

4.组合命令

&  Usage：第一条命令 & 第二条命令 [& 第三条命令...]

用这种方法可以同时执行多条命令，而不管命令是否执行成功

&& Usage：第一条命令 && 第二条命令 [&& 第三条命令...]

用这种方法可以同时执行多条命令，当碰到执行出错的命令后将不执行后面的命令，如果一直没有出错则一直执行完所有命令；

||  Usage：第一条命令 || 第二条命令 [|| 第三条命令...]

用这种方法可以同时执行多条命令，当碰到执行正确的命令后将不执行后面的命令，如果没有出现正确的命令则一直执行完所有命令；

Sample：
           C:>dir z: && dir c:Ex4rch
           The system cannot find the path specified.

C:>dir c:Ex4rch && dir z:
           Volume in drive C has no label.
           Volume Serial Number is 0078-59FB

Directory of c:Ex4rch

2002-05-14 23:55 <DIR> .
           2002-05-14 23:55 <DIR> ..
           2002-05-14 23:55 14 sometips.gif
           1 File(s) 14 bytes
           2 Dir(s) 768,671,744 bytes free
           The system cannot find the path specified.

Sample：
           C:Ex4rch>dir sometips.gif || del sometips.gif
           Volume in drive C has no label.
           Volume Serial Number is 0078-59FB

Directory of C:Ex4rch

2002-05-14 23:55 14 sometips.gif
           1 File(s) 14 bytes
           0 Dir(s) 768,696,320 bytes free

综合实例:参见http://www.cnblogs.com/shiney/archive/2011/07/04/2097236.html

------------------------ cut here then save as .bat or .cmd file ---------------------------

@echo preparing to delete all the default shares.when ready pres any key.
           @pause
           @echo off

:Rem check parameters if null show usage.
           if {%1}=={} goto :Usage

:Usage
           echo.
           echo ------------------------------------------------------
           echo.
           echo ☆ A example for batch file ☆
           echo ☆ [Use batch file to change the sysytem share properties.] ☆
           echo.
           echo Author：Ex4rch
           echo Mail:Ex4rch@hotmail.com QQ:1672602
           echo.
           echo Error：Not enough parameters

:END
           echo.
           echo ------------------------------------------------------
           echo.
           echo OK,delshare.bat has deleted all the share you assigned.
           echo.Any questions ,feel free to mail toEx4rch@hotmail.com.
           echo
           echo.
           echo ------------------------------------------------------
           echo.

:EOF
           echo end of the batch file