I personally use a i3 "mode" to handle system shutdown, reboot, etc.
e.g to suspend: Mod+Pause then s.
The shortcuts are written in the mode name as a reminder.
set $mode_system System (l) lock, (e) logout, (s) suspend, (h) hibernate, (r) reboot, (Shift+s) shutdown
mode "$mode_system" {
bindsym l exec --no-startup-id i3exit lock, mode "default"
bindsym e exec --no-startup-id i3exit logout, mode "default"
bindsym s exec --no-startup-id i3exit suspend, mode "default"
bindsym h exec --no-startup-id i3exit hibernate, mode "default"
bindsym r exec --no-startup-id i3exit reboot, mode "default"
bindsym Shift+s exec --no-startup-id i3exit shutdown, mode "default"
# back to normal: Enter or Escape
bindsym Return mode "default"
bindsym Escape mode "default"
}
bindsym $mod+Pause mode "$mode_system"
the i3exit is a simple script like that (for a distro with systemd):
#!/bin/sh
lock() {
i3lock
}
case "$1" in
lock)
lock
;;
logout)
i3-msg exit
;;
suspend)
lock && systemctl suspend
;;
hibernate)
lock && systemctl hibernate
;;
reboot)
systemctl reboot
;;
shutdown)
systemctl poweroff
;;
*)
echo "Usage: $0 {lock|logout|suspend|hibernate|reboot|shutdown}"
exit 2
esac
exit 0