Step-by-step – Flatpak Installation in Ubuntu 20.04

GNU/Linux Ubuntu 20.04 Installing Flatpak – QuickStart Guide

Hi! The Tutorial shows you Step-by-Step How to Install Flatpak in Ubuntu 20.04 Focal LTS GNU/Linux Desktop.

And Flatpak for Ubuntu 20.04 is a technology for Building, Distributing, Installing and Running Linux Apps.

Moreover, Flatpak is primarily targeted at the Linux Desktop, although it can also be used as the basis for application distribution in other contexts, such as embedded systems.

Finally, Flatpak has been designed and implemented with a number of Goals:

• Allow applications to be installed on any Linux distribution.
• Provide consistent environments for applications, to facilitate testing and reduce bugs.
• Decouple applications from the operating system, so that applications don’t depend on specific versions of each distribution.
• Allow applications to bundle their own Dependencies, so that they can use libraries that aren’t provided by a Linux distribution, and so they can depend on specific versions or even patched versions of a library.
• Increase the security of Linux desktops, by isolating applications in sandboxes.

So now also if Flatpak is already on System is Strongly Recommended Upgrading it to the Latest Release by the Official Flatpak PPA Repo.

1. 1. Launching Shell Emulator

   Open a Terminal window
   (Press “Enter” to Execute Commands)

   
   In case first see: Terminal QuickStart Guide.
   

2. 2. Enabling Flatpak Repo

   Then to Add Flatpak Repository for Ubuntu
   Execute:

   sudo add-apt-repository ppa:alexlarsson/flatpak

   And then to Refresh Apt Repos:

   sudo apt update

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.

3. 3. Installing Flatpak

   Finally, to Install Flatpak for Ubuntu Focal
   Simply play:

   sudo apt install flatpak

   Authenticate with the User Admin Pass.
   If Got “User is Not in Sudoers file” then see: How to Enable sudo.
   Again for the Desktop integration run:

   sudo apt install gnome-software-plugin-flatpak

   And with this latest setup on GNOME based you’ll be able to Install Flatpak Apps just Double-clicking on the downloaded flatpakref File.