Checking for updates

In this section, we will use the Vagrantfile that was used in part of the first section. Now that we know the versions of software associated with our system (packages, OS, and kernel), we're going to look at what updates are available to us, and how we might install them.

We will check for both specific package updates and updates to all packages.

How to do it...

In this section, we're going to drop into our CentOS and Debian boxes, skipping Ubuntu, as the same rules from Debian will apply.

We are going to use the kernel throughout these examples, although any package on your system can be substituted.

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