flatpak Developer Matthias Clasen mclasen@redhat.com flatpak kill 1 flatpak-kill Stop a running application flatpak kill INSTANCE Stop a running Flatpak instance. INSTANCE can be either the numeric instance ID or the application ID of a running Flatpak. You can use flatpak ps to find the instance IDs of running flatpaks. The following options are understood: -h --help Show help options and exit. -v --verbose Print debug information during command processing. --ostree-verbose Print OSTree debug information during command processing. $ flatpak kill org.gnome.Todo flatpak1, flatpak-run1, flatpak-ps1