[CENTOS] Forget about cron settings! (RHEL 6.x, 7x series)

2020/07/22 Addendum: The article has been significantly revised based on the comments received from error_401.

What is cron?

The one who executes the specified command (job) on a regular basis

How do you set it?

REHL 6 Official Guide REHL 7 Official Guide Let's set by referring to!

At the end

Have a nice cron life!