Linux time-related commands

View the time zone: # Cat/etc/sysconfig/clock

View System Time: # date

Modification date: # date-s 25/10/2012

Modification time: # date-s 21:45:36

Use the ntpdate command to automatically synchronize time. You can find the relevant tutorials.

If ntpdate-related ports are blocked, use the htpdate tool as an alternative.

Htpdate operation method:

Htpdate-s www.baidu.com // The current time based on the time of www.baidu.com

Htpdate-Q www.baidu.com www.qq.com www.163.com // set the time based on these websites

You can use the crontab program to regularly execute htpdate for scheduled correction time. crontab can be set:

5 3 ***/usr/bin/htpdate-D-a-l www.baidu.com www.qq.com www.163.com