LINUX-8 Basic Command---Date

The 2,date command is used to display, set the system's time or date, in the following format: date[option][+ specify format].

The detailed format for date is as follows:

Date command Format

Parameters	Role
%t	Skip the [tab] key
%H	Hours (00-23)
%I	Hours (01-12)
%M	Minutes (00-59)
%s	Seconds (00-59)
%x	Equivalent to%h:%i:%s
%Z	Show Time zone
%p	Show local AM or PM
%A	Day of the Week (Sunday-saturday)
%a	Day of the Week (SUN-SAT)
%B	Full month (January-december)
%b	Abbreviated month (JAN_DEC)
%d	Day (01-31)
%j	Day of the Year (001-336)
%m	Month (01-12)
%Y	Full year

Case

@1, viewing current system time

Date

@2, according to "year-month-day hours: minutes: Seconds" format display

Date " +%y-%m-%d%h:%m:%s "

@3, set the system time date is September 1, 2016 8:30: Update hardware clock plus hwclock-w

Date " 20160901 8:30:00 "

[Email protected] ~]# hwclock-w

@4, see the Day of the week

Date +%a

@5, judging today is the first day of the year

Date +%j

LINUX-8 Basic Command---Date