Syncthing Gtk Installation in Ubuntu 20.04 – Step-by-step

Installing

2. 2. Setting Up Flatpak

   How to Install Flatpak on Ubuntu 20.04

   Flatpak Ubuntu 20.04 Installation Guide

   Flatpak Ubuntu 20.04 Setup

   First, check if it’s already there:

   which flatpak

3. 3. Installing Syncthing GTK

   Then to Install Syncthing GTK in Ubuntu
   Simply run:

   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/me.kozec.syncthingtk.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’s User or Admin Pass.
   Then Confirm the proposed Setup with ‘Enter’ and Wait patiently until the App is Downloaded and Installed.