Ok, now that I’ve installed CentOS, I decided to install X Windows. And like Rip Van Winkle, I learnt that a lot has changed in 20 years :)
A windowing environment was easy to install …
sudo yum groupinstall "Gnome Desktop"
and the trusty old
startx & gave me a Windowing Environment (which I have yet to explore)
However, switching permanantly to graphics mode (or vice versa) wasn’t so easy. I wanted to set my command line as the default startup environment and so I went to look for the default runlevel. I coudn’t find it. That’s because they don’t exist anymore. No inittab of old, nothing.
So, systemd targets something called targets2 instead of runlevels. (Haha, see what I did there? :P) Targets to my mind involve a collection of settings in a file all relating to … something … a service.
You could group all of your network stuff in a network target, or like I needed it all your runlevel settings in a command line target or a graphical target.
So a quick search led me to the
systemctl get-default command which gives my my default target
Another search gave me the multi-user target to use if I wanted a multiuser command line environment.
So to switch all I had to do was,
systemctl set-default multi-user.target
If I ever wanted my graphical environment back as a default setting,
systemctl set-default graphical.target
And Bob, as they say, is my uncle.