% flatpak

# Run an installed application
flatpak run <installed_app_name>

# Search for an application
flatpak search <app_name>

# Install an application from a remote source
flatpak install <remote_name> <app_name>

# Uninstall an application
flatpak uninstall <installed_app_name>

# List all installed applications and runtimes
flatpak list

# List all installed applications
flatpak list --app

# Add a remote source
flatpak remote-add --if-not-exists <remote_name> <remote_url>

# List all applications available in a remote source
flatpak remote-ls <installed_remotes>

# Show the commit log for a specific application
flatpak remote-info --log <installed_remotes> <installed_app_name>

# Update installed applications
flatpak update

# Show running applications
flatpak ps

# Kill a running application
flatpak kill <running_app>

$ installed_app_name: flatpak list --app | awk -F"\t" '{ print $2 }'
$ installed_remotes: flatpak remote-list | awk '{ print $1 }'
$ running_app: flatpak ps | awk '{ print $3 }'