[CentOS] Post-installation setup script for CentOS 7 servers

--On Monday, November 18, 2019 6:06 PM +0100 Leon Fauster via CentOS 
<centos at centos.org> wrote:

> I dont see if it was mentioned; but "network scripts" are deprecated in
> C8. So better start the mental migration today before the packages get
> removed totally :-)

What file holds all those settings, now? As a rule, I prefer to edit text 
files to finding the right GUI/TUI utility to muck with them. I'd also like 
to know how the new and old files interact.