i3exit
Exit the i3 window manager.
TLDR
Log out of i3
$ i3exit logout
Lock i3
$ i3exit lock
Shut down the system
$ i3exit shutdown
Suspend the system
$ i3exit suspend
Switch to the login screen to log in as a different user
$ i3exit switch_user
Hibernate the system
$ i3exit hibernate
Reboot the system
$ i3exit reboot