Batch skills

1.获取当前日期时间
set datetime=%date:~,10%%time:~,2%%time:~3,2%%time:~6,2%

2.获取当前路径
set pwd=%CD%

3.延时

`ping -n 11 127.0.0.1 >nul`  

ping 本机 11 次，可用于批处理延时 10 秒。命令中的>nul 为屏蔽输出。  
_简短式可以写成:_  
`ping -n 11 127.1 >nul`

4.计算运行时间

    @ECHO off&setlocal enabledelayedexpansion
    CALL :TIME_START
    REM 修改这里的 ping 为你需要写的代码
    ping 127.1 -n 2 >nul
    CALL :TIME_END
    PAUSE&exit /B 0
    :TIME_START
    SET /a time_s=%time:~6,2%
    SET /a time_m=%time:~3,2%
    @ECHO Start  time: %time%
    GOTO :EOF
    :TIME_END
    @ECHO End  time: %time%
    SET /a diff_m=%time:~3,2%-%time_m%
    SET /a diff_s=%time:~6,2%-%time_s%
    SET /a total="%diff_m%"*60+"%diff_s%"
    @ECHO Elapsed time: %total% sec
    GOTO :EOF

_运行效果:_  

    D:\work\project\tmp>test.bat
    Start  time: 13:52:00.43
    End  time: 13:52:01.48
    Elapsed time: 1 sec
    请按任意键继续. . .

5.罗列当前目录所有 txt 文件

@echo off
for %%i in (*.txt) do echo "%%i"
pause

6.罗列当前和子目录所有 cfg 文件

for /r 参数 遍历搜索  
格式：`FOR /R [[drive:]path] %%variable IN (set) DO command [command-parameters]`  

举例:  
命令:(注意，该命令在 dos 窗口运行)  
    `D:\work\project\tmp\CI>for /r %i in (*.cfg) do @echo %i`  

输出:  

    D:\work\project\tmp\CI\ci_cfg\ci_scm_trunk.cfg
    D:\work\project\tmp\CI\ci_cfg\ci_ubackup.cfg
    D:\work\project\tmp\CI\zd15_lcd\setup\Release\apprun.cfg
    D:\work\project\tmp\CI\zd15_lcd\setup\Release\service.cfg
    D:\work\project\tmp\CI\zd15_lcd\src\service\apprun.cfg
    D:\work\project\tmp\CI\zd15_lcd\src\service\service.cfg  

方法二:(注意，该命令在批处理文件中运行)  
    `for /f %%i in ('dir /s /b /a-d *.cfg') do @ECHO %%i`  

解决路径中出现空格  
    `for /f “delims=*”%%i in ('dir /s /b /a-d *.cfg') do @ECHO %%`