Step-by-step – Signal Desktop CentOS 9 Installation

Installing

2. 2. Setting Up Flatpak

   How to Install Flatpak on CentOS 9

   Flatpak CentOS Stream 9 Installation Guide

   Flatpak CentOS Stream 9 Setup

3. 3. Installing Signal Messenger

   Then to Set up Signal App on CentOS
   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.signal.Signal.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.

4. 4. Launching Signal Desktop

   Finally, Launch & Enjoy Signal Messenger ;)
   Make Use of the Desktop Launcher:

   

   Or from Shell run:

   flatpak run org.signal.Signal

   Over the First, Start you’ll be Prompted to Link your Mobile Device by the QR code:

   

   Just follow the Instructions reported on Screen…

   

So Now I’m truly Happy if this Info could Help you to Install Signal App on CentOS 9!