Advanced date command usage

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Calculate the date 3 days ago

date +%D -d ‘-3 days‘11/03/12

Calculate the date after 3 days

date +%D -d ‘+3 days‘11/09/12

The date after 3 days is calculated. If you do not write +, the result is the same as the result above.

date +%D -d ‘3 days‘11/09/12

Calculate the date one month ago

date +%F -d ‘-1 month‘2012-10-06

Calculate the date of 1 year ago

date +%F -d ‘-1 year‘2011-11-06

Let's take a look at the related time operations. With the above understanding of date operations, it is not difficult to see this time. Ask translate.google.com.hk ^_^

Get current time

date +%T13:48:25

Get the time 1 hour ago

date +%T -d ‘-1 hours‘12:48:27

Obtain the time 10 minutes ago.

date +%T -d ‘-10 minutes‘13:38:35

Get the time after 3 hours

date +%T -d ‘3 hours‘16:49:08

For processing timestamps, the benchmark for timestamps is 00:00:00, January 1, January 1, 1970. Note that this is the time of the Greenwich Mean Observatory, not Beijing time.

Displays the current timestamp of the system.

date +%s1352183334

Convert a timestamp Back To The Date Format

date -d "@1352183334"Tue Nov  6 14:28:54 CST 2012

See, because the system is the time zone of the East 8 region, so when the time stamp is 0, the system should have been on the morning of January 1, January 1, 1970.

date -d "@0"Thu Jan  1 08:00:00 CST 1970

How to calculate the first n days of an arbitrary date or the last n days?

DAY="20000101"echo $DAY20000101date +%F -d "$DAY 1 day"2000-01-02date +%F -d "$DAY -1 day"1999-12-31

How many days is the difference between two dates, such as November 1, 2012 and May 1, 2010?

d1=$(date +%s -d 20121101)d2=$(date +%s -d 20101101)echo $(((d1-d2)/86400))731

This article from the "lisp O & M path" blog, please be sure to keep this source http://lspgyy.blog.51cto.com/5264172/1543682

Advanced date command usage