命令行获取当前日期及时间

C:>echo %date%

2016/06/20 周一

C:>echo %date:~0,4%

2016

C:>echo %date:~5,2%

06

C:>echo %date:~8,2%

20

C:>echo %time%

15:29:13.63

C:>echo %time:~0,2%

15

C:>echo %time:~3,2%

29

C:>echo %time:~6,2%

54

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