How to Install Flatpak on Xubuntu 20.04 Focal Easy Guide

Setting Up

2. 2. Enabling Flatpak Repo

   Then to Add Flatpak Repository for Xubuntu
   Execute:

   sudo add-apt-repository ppa:alexlarsson/flatpak

   And if you Get a Missing Repo Issue then Amend it Manually with:

   sudo nano /etc/apt/sources.list.d/*flatpak*.list

   Changing ‘focal’ in ‘eoan’!
   Ctrl+x to Save & Exit from nano Editor.
   And then to Refresh Apt Repos Xubuntu:

   sudo apt update