Flatbak install Opensuse

 Follow these simple steps to start using Flatpak

Install Flatpak

Flatpak is available in the default repositories of all currently maintained openSUSE Leap and openSUSE Tumbleweed versions.

If you prefer a graphical installation, you can install Flatpak using a "1-click installer" from software.opensuse.org. If your distribution version is not shown by default, click Show flatpak for other distributions first and then select from the list.

Alternatively, install Flatpak from the command line using Zypper:

sudo zypper install flatpak

Add the Flathub repository

Flathub is the best place to get Flatpak apps. To enable it, run:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

Restart

To complete setup, restart your system. Now all you have to do is install some apps!

For other distributions

https://flatpak.org/setup/  

Example:

https://flathub.org/apps/details/net.codeindustry.MasterPDFEditor

Command line instructions
Install:
Make sure to follow the setup guide before installing
flatpak install flathub net.codeindustry.MasterPDFEditor
Run:
flatpak run net.codeindustry.MasterPDFEditor

List installed applications
To list the applications and runtimes you have installed, run:

$ flatpak list
Alternatively, to just list installed applications, run:

$ flatpak list --app
Remove an application
To remove an application, run:

$ flatpak uninstall org.gimp.GIMP
Troubleshooting
Flatpak has a few commands that can help you to get things working again when something goes wrong.

To remove runtimes and extensions that are not used by installed applications, use:

$ flatpak uninstall --unused
To fix inconsistencies with your local installation, use:

$ flatpak repair
Flatpak also has a number of commands to manage the portal permissions of installed apps. To reset all portal permissions for an app, use flatpak permission-reset:

$ flatpak permission-reset org.gimp.GIMP
To find out what changes have been made to your Flatpak installation over time, you can take a look at the logs 

$ flatpak history