xss-lock

*xss-lock* hooks up your favorite locker to the MIT screen saver extension for X and also to systemd's login manager. The locker is executed in response to events from these two sources: - X signals when screen saver activation is forced or after a period of user inactivity (as set with `xset s TIMEOUT`). In the latter case, the notifier command, if specified, is executed first. - The login manager can also request that the session be locked; as a result of `loginctl lock-sessions`, for example. Additionally, **xss-lock** uses the inhibition logic to lock the screen before the system goes to sleep. *xss-lock* waits for the locker to exit -- or kills it when screen saver deactivation or session unlocking is forced -- so the command should not fork. Also, *xss-lock* manages the idle hint on the login session. The idle state of the session is directly linked to user activity as reported by X (except when the notifier runs before locking the screen). When all sessions are idle, the login manager can take action (such as suspending the system) after a preconfigured delay.