To run an AppImage...
chmod a+x MyApp*.AppImage
./MyApp*.AppImage
Provides tools for updating and removing AppImages.
sudo add-apt-repository ppa:appimagelauncher-team/stable
This will add appimagelauncher-team-ubuntu-stable-focal.list to /etc/apt/sources.list/d (assuming Ubuntu 20.4).Other files may exist (e.g. appimagelauncher-team-ubuntu-stable-bionic.list) but all entries will generally be commented out.sudo apt update
sudo apt install appimagelauncher
AppImageLauncher MyApp.AppImage
Plexamp