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Synchronization time We use the method of automatic execution of scheduled tasks and use the crontab command to synchronize editing time

Basic format:

Command

Time-sharing, day, month and week order

The first column represents minutes 1: 59 per minute or * / 1

The second column represents the hour 1: 23 (0 means 0 o'clock)

The third column represents the date 1: 31

The fourth column represents the month from January to December.

The fifth column identification number is 0006 (0 means Sunday)

Column 6 commands to run

Crontab-e / / Edit scheduled tasks

Crontab-l / / list View scheduled tasks

Crontab-r / / Delete the current scheduled task

Use the ntpdate command to synchronize time

Ntpdate-s time.windows.com

-s specifies the use of the log operation syslog facility instead of using standard output. It is useful when running the ntpdate command and the cron command.

Do the following:

Crontab-e

1 root ntpdate-s time.windows.com

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