items="lock screen;log out;toggle picom;shut down;reboot;update all"

selection=$(echo $items | rofi -sep ";" -dmenu)

case $selection in
    "lock screen")
        i3lock-fancy
        ;;
    "log out")
        pkill i3
        ;;
    "toggle picom")
        pkill picom || picom --experimental-backend -b
        ;;
    "shut down")
        shutdown now
        ;;
    "reboot")
        systemctl reboot
        ;;
esac