This is a companion discussion topic for the original entry at https://linuxconfig.org/install-xfce-desktop-on-ubuntu-18-04-bionic-beaver-linux
FINALLY someone does a tutorial on installing xfce without using the xubuntu-desktop package!
Do we really need a tutorial for a single command? apt install xfce4 is not a tutorial! Besides this implies you have the Gnome DE installed (which I don’t, I have budgie) if you dont then you will wonder why /etc/gdm3/custom.conf doesnt exist!