I'm very new at Linux. I'm running a mediaserver (pms) on Ubuntu 18.04.3 mini, with no desktop or something like that.
Now I'm wondering if it's possible to connect to the server, and run applications like luckybackup GUI, or is it a requirement to have a desktop installed on the server?
What you're looking for is called X-forwarding and it can be done. The server will require to have the X11 server-side stuff installed, and SSH will require to be configured to allow it. Have a look here and see if this helps: https://www.addictivetips.com/ubuntu-linux-tips/set-up-x11-forwarding-on-linux/
If you need cross-platform compatibility then Spice project is a bit more involved but might also help: https://www.spice-space.org/
VNC is another cross platform solution. Here's one tutorial but there are probably plenty more out there: https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-vnc-on-ubuntu-18-04
Ubuntu Server is a variant of the Ubuntu OS that does not include a graphical user interface (GUI) by default. GUI applications consume system resources needed for server-oriented tasks, so Linux server distributions usually avoid a GUI in favor of the command-line terminal.
Some tools, however, perform better and are easier to manage with a GUI. If you use a tool with a GUI, installing a desktop environment may improve the experience of working with the server.
This guide will show you how to install a desktop (GUI) graphical interface on your Ubuntu server.
I find this link helpful so you try also
https://phoenixnap.com/kb/how-to-install-a-gui-on-ubuntu
it is the instruction on how to install kinds of GUI in the server without a GUI like
Slim by
$sudo service slim start
Ubuntu Desktop by
sudo apt install ubuntu-desktop
KDE Plasma
sudo apt install kde-plasma-desktop
.
.
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