Install XFCE desktop and remove Gnome desktop on Ubuntu 18.10

To install Xubuntu after you have install Ubuntu 18.10 with the default Gnome desktop, make sure to take a backup of your data and then open a terminal window and run the following commands:

$ sudo apt-get install xubuntu-desktop <enter>$ sudo apt-get purge whoopsie orage gigolo catfish snap* parole* <enter>$ sudo . . . → Read More: Install XFCE desktop and remove Gnome desktop on Ubuntu 18.10

Error when opening a LUKS encrypted container file /dev/loop0 Device or resource is busy on Ubuntu 18.10 Gnome Desktop

When you enter the command below in a terminal window:

$ sudo /sbin/losetup /dev/loop0 /home/user1/folder1/containerdatafile <enter>

Device error or resource busy error message appears and the device is not setup.

The reason is that /dev/loop0 is taken by snap.

To overcome the error, change /dev/loop0 to something else like /dev/loop35

Or, if you do not . . . → Read More: Error when opening a LUKS encrypted container file /dev/loop0 Device or resource is busy on Ubuntu 18.10 Gnome Desktop

Install Gnome Shell as alternative to Unity on Ubuntu

If you do not want to use Unity, the default Ubuntu desktop, you can install Gnome Shell using the following command in a terminal window:

$ sudo apt-get install gnome-shell <enter>

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