Linux Server sync time

Linux synchronization time, at least two ways: rdate,ntpdate two kinds of

First detect if the system is installed with these two commands

Rpm-qa |grep Rdate

Rpm-qa |grep Ntpdate

If you install something, you can use Yum-y install Rdate/ntpdate

Rdate

Feature Description: Displays the date and time of the other host.

syntax:rdate [-ps][host name or IP address ...]

Additional instructions: execute the rdate instruction, ask the other host for the system time and display it.

Parameters
-P Displays the date and time of the remote host.

-S returns the date and time received from the remote host to the local host's system time.

The second specific use method

Direct CRONTAB-E, add the following two commands to the scheduled task.

Rdate-s time.nist.gov

Ntpdate ntp.sjtu.edu.cn

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Linux Server sync time