Starting and stopping services

In this section, we're going to look at the trivial-but-important aspect of starting and stopping services.

Imagine a world without the ability to automatically start daemons when a box boots; you'd have to manually go in and start your services with every reboot, being careful to ensure you start your services in the appropriate way each time.

That world, like one dominated by the Stargate Replicators, isn't one in which I'd want to live.

How to do it...

We're going to use postfix in this example, as it's a service that won't be doing much of anything on our VM.

postfix is a Mail Transport Agent (MTA) typically installed on CentOS boxes. Even if your box...