Usage of the Linux Date command

1. Display time

The date command displays dates in the specified format, and only date displays the current time in the default format. As follows:

If you need to display the date in the specified format, you can use a string that begins with "+" to specify its format, in the following format:

%n: Next line
%t: Jump Grid
%H: Hours (00-23)
%I: Hours (01-12)
%k: Hours (0-23)
%l: Hours (1-12)
%M: minutes (00-59)
%p: Show local AM or PM
%r: Direct Display time (12-hour format, HH:MM:SS [ap]m)
%s: Number of seconds from January 1, 1970 00:00:00 UTC to date
%s: Seconds (00-60)
%T: Direct Display time (24-hour system)
%x: Equivalent to%h:%m:%s
%Z: Show Time zone
%a: Day of the Week (SUN-SAT)
%A: Day of the Week (Sunday-saturday)
%b: Month (JAN-DEC)
%B: Month (january-december)
%c: Display date and time directly
%d: Day (01-31)
%d: Show date directly (MM/DD/YY)
%h: With%b
%j: The first day of the Year (001-366)
%m: Month (01-12)
%u: Week of the Year (00-53) (Sunday is the first day of the week)
%w: Day of the Week (0-6)
%W: Week of the Year (00-53) (with Monday as the first day of the week)
%x: Show date directly (MM/DD/YY)
%y: Last two digits of the year (00.99)
%Y: Full year (0000-9999)

These formats do not have to be remembered, only a few common ones. For example,%y represents the year,%m for the month,%d for the day,%h for the hour,%m for minutes,%s for seconds, and%s for the number of seconds from January 1, 1970 to 00:00:00 UTC, equivalent to the time function, and%w represents the day of the week.

See the example below:

If the time to display is not the current time, but the elapsed time, you can use the-D option. For example, show time three years ago:

See this command I was very hurt, the past time can no longer go back, can only use the command to see. Displays the time after three months:

Show time after 10 days:

Sometimes you need to get the number of seconds that the current time is away from 1970 0:0 0 seconds, stored in the variable:

2. Set the time

Use the-S option to set the system time:

There are a variety of ways to choose from:

You need to believe in the intelligence of date enough.

More places to use:

Use the date command to get the current date and create a new folder based on that date.

Usage of the Linux Date command (GO)