Using dnf and apt for package management

Packages and package groups are different ways of deploying software to our CentOS and Ubuntu virtual machines. A package is nothing more than a stack of files that can be installed on our machine in an automated fashion, without our manual input. Package groups are more of a RedHat/CentOS concept. Just like the term suggests, they are a way of grouping packages into larger groups so that we can use these groups to install multiple packages without manually specifying every single package from the group. Let's learn how to use them to our benefit, specifically, for deployment purposes.

Getting ready

Let's continue using our cli1 and cli2 machines for this one, so make sure that they're powered on and ready to go. We are going to use cli1 for the apt part of this recipe, and cli2 for the yum/dnf part, as cli1 is Ubuntu-based and cli2 is CentOS-based.

How to do it…

Let's start with the basics of yum and dnf...