取年份：echo %date:~0,4% 

取月份：echo %date:~5,2% 

取日期：echo %date:~8,2% 

取星期：echo %date:~10,6% 

取小时：echo %time:~0,2% 

取分钟：echo %time:~3,2% 

取秒：echo %time:~6,2% 

取毫秒：echo %time:~9,2%

D:\>echo %date:~0,4%-%date:~5,2%-%date:~8,2%

2018-06-06

D:\>echo %time:~0,2%:%time:~3,2%:%time:~6,2%

11:22:09

D:\>echo %date:~0,4%-%date:~5,2%-%date:~8,2%-%time:~0,2%:%time:~3,2%:%time:~6,2%

2018-06-06-11:22:12

D:\>echo %date:~0,4%%date:~5,2%%date:~8,2%-%time:~0,2%:%time:~3,2%:%time:~6,2%

20180606-11:23:33