Step-by-step – Deja Dup Kubuntu Installation

Installing

2. 2. Setting Up Flatpak

   How to Install Flatpak on Kubuntu

   Flatpak Kubuntu Installation Guide

   Flatpak Kubuntu Setup

   First, check if it’s already there:

   which flatpak

3. 3. Installing Deja Dup

   Then to Install Deja Dup Flatpak App on Kubuntu
   Simply play:

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

   For further Insight see the Flatpak Official Documentation.
   And after:

   flatpak install https://dl.flathub.org/repo/appstream/org.gnome.DejaDup.flatpakref

   The Flatpak App Setup do Not need the sudo Command because then it Runs confined into a Sandbox.
   However you’ll be Prompted to Authenticate with your User or Admin Pass.
   Then Confirm the proposed Setup with ‘Enter’ and wait until the App is Downloaded and Installed.