If Cent OS helps to power your data center, you might be interested in knowing it is possible (and fairly easy) to enable the automatic updating of security updates.
It is usually configured to show on the shell login with the kernel version: Cent OS is based on the commercially supported Red Hat Linux, therefore, once logged in use command can be used to find the major version and kernel version: Since Cent OS version 7 there is only the 64-bit version officially supported (although a 32-bit version is available from the community).
Open up a terminal window and issue the following: Below that, you will see the [email] section.
Change email_from to the address you want the reports to come from, email_to to the email address you want reports sent and, if necessary, change the email_host to your required email host (Figure A).
There are many reasons why updates are released—one of the more important being security patches.
If you're not regularly updating your systems, you are vulnerable to who knows what.