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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).

And so, let's take a look at how you can enable automatic security updates on Cent OS 7.

This will be taken care of, thanks to a small program, called yum-cron.

(See Specifying package names for more information) If the packages or globs specified match to packages which are not currently installed then update will not install them.

update operates on groups, files, provides and filelists just like the "install" command.

To search for a specific package by name in yum you will use the list function.

When Cent OS boots the major version is briefly displayed on a boot screen.

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).

When security patches arrive, it is in your best interest to apply them as soon as possible.

To that end, depending upon a manual process can lead to human error.

If one or more packages or package globs are specified, Yum will only update the listed packages.

While updating packages, yum will ensure that all dependencies are satisfied.

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.

Say, for instance, you want to hold back kernel upgrades to run them manually.

That makes perfect sense, as often a kernel upgrade requires a system reboot (in order for the changes to take effect). To do that, go back to the Now yum-cron won't include the kernel in the upgrades.

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