Some uses of Linux date-d

the format output type character in the date command has the following meanings:

A%%a of the current locale (for example: Day, representing Sunday)%a the full name of the current locale (e.g., Sunday)%b the month name of the current locale (e.g.: one, for January)%b the full name of the current locale (e.g. January)% C Date and time of the current locale (e.g. Thursday, March 3, 2005 23:05:25)%c century; for example,%Y, typically omitting the last two digits of the current year (for example:%d) by the date of the month (ex: N)%d on a monthly date; equals%m/%d/%y% E The date of the month, add a space, equal to the%_d%f full date format, equivalent to the last two bits of the%y-%m-%d%giso-8601 format year (see%G)%giso-8601 format year (see%V), generally only with%V%h equals%b%h hours (00-23 )%i hours (00-12)%j year-to-date (001-366)%k Hour, Space padded (0..23); Same as%_h%l hour, Space padded (1..12); Same as%_i%m month (01..12)%M minute (00..59)%n newline%n nanoseconds (000000000-999999999)%p the "Morning" or "afternoon" under the current locale, the output is empty when unknown%p is similar to%p, but the loss Lowercase letter%r 12-hour clock time under current locale (e.g. 11:11:04 pm) hours and minutes of%r24 hour, equivalent to%h:%m%s seconds since UTC 1970-01-01 00:00:00%s seconds (00-60)%t output tabulation The tab%t time, which is equal to%h:%m:%s%u week, 1 represents the week of the year in Monday%u, with Sunday being the first day of the Week (00-53)%viso-8601 format specification of the week, and Monday as the first day of each week (01-53)%w the day of the Week ( 0-6), 0 represents Monday%w of the Week of the year, in Monday, the date description under the current locale of the first day of the Week (00-53)%x (for example: 12/31/99)%x time description under current locale (e.g. 23:13:48)%y year last two digits (00-99) %y year%z +HHMM digital time zone (for example, -0400)%:z +hh:mm Digital time zone (for example, -04:00)%::z +hh:mm:ss Digital time zone (for example, -04:00: XX)%:::z digital time zone with the necessary precision (for example, -04,+05:30)%z time zone abbreviations sorted by alphabet (for example, EDT) 

Date-d a little bit of common examples and instructions:

date-d ' 2 days ago '//Show 2 day ago date-d ' second ago '//show 60 seconds ago date-d ' 3 months 1 day '//show March 1 days after date-d ' Dec ' + %j//show December 25 on which day of the year date-d ' 1970-01-01 00:00:30 +0000 ' +%s   //The number of seconds since UTC time 1970-01-01 00:00:00

Some uses of Linux date-d