I recently switched my desktop environment from Core to Zorin Lite using this command:
sudo apt install zorin-os-lite-desktop
The installation went ahead successfully and the XFCE-based environment was installed. Now I want to revert back to Core, what's the equivalent command or way to do that?
Open Synaptic package manager and search for anything commencing with Zorin: it should either bring back gnome desktop or core. Can't check as posting from smartphone.
Since you installed the lite DE in addition to core, you can switch between the two environments at the login screen. There is a menu bar at the top of the lightdm login screen. I haven't used it in a while, I'm on KDE, but one of the pulldown menus should have gnome and possibly wayland listed in it. Choose the gnome option and you will be in the core desktop environment. On the gdm login screen, once you click to see the password field, there will be a cog in the bottom right corner, that will give you the option to change from gnome to either xfce or Wayland.
Once logged into core you can remove the xfce DE using the same command used to install it, but change install to remove, if you choose.
Thank you! There's indeed a menu on top of the login screen to choose between desktops. I haven't yet decided to remove Xfce and it is great to be able to choose.
After logging in to Zorin Core, I am unable to remove the Xfce desktop.
sudo apt remove zorin-os-lite-desktop is not working.
Package 'zorin-os-lite-desktop' is not installed, so not removed
Any pointers?
You can try using the synaptic package manager. If you don't have it installed use sudo apt install synaptic To install it. It provides a gui to remove / install packages. Select all the xfce and lightdm packages and you can uninstall that way.