terminal – Where does scutil store its information?

I don’t usually dig around with the terminal, but I have been puzzled with the local host behavior on my Mac for a long time. It works in some conditions and doesn’t in others. My question isn’t about the localhost, but about scutil.

I tried this out scutil but it seems like a blackbox to me. It sets and gets the data I ask it to, but where does it store the information? What does scutil mean?