Script for Lenevo Carbon X1 gen 2 to prepare for docking and undocking from One Link Pro Dock

onelink.sh

#!/usr/bin/env bash

ethernet="enp0s20u3u1u3"
wireless_network="wlp3s0-syn-ack-5GHz"
monitor_left="DP1"
monitor_right="DP2-3"
monitor_laptop="eDP1"

status() {
	level=$1
        message=$2
        echo "[${level}] $(date +"%Y-%m-%d %T") - ${message}"
}

dockon() {
	all=$1

	status INFO "Preparing laptop for use on One Link Pro dock."

	status INFO "Turn on monitor attached to mini-display port."
	xrandr --output $monitor_left --auto 1>/dev/null
	status INFO "Turn off laptop screen."
	xrandr --output $monitor_laptop --off 1>/dev/null
	status INFO "Turn on monitor attached to DVI on dock."
	xrandr --output $monitor_right --auto --right-of $monitor_left 1>/dev/null
        [ "$all" == "all" ] && \
        	xrandr --output $monitor_laptop --auto --right-of $monitor_right 1>/dev/null

	status INFO "Pull DHCP address for ethernet port on dock."
	sudo dhcpcd $ethernet 1>/dev/null

	status INFO "Turn off wireless internet."
	sudo netctl stop-all 1>/dev/null

	exit 0
}

dockoff() {
	status INFO "Preparing laptop to unplug from One Link Pro dock."

	status INFO "Turn on laptop screen."
	xrandr --output $monitor_laptop --auto 1>/dev/null
	status INFO "Turn off monitor attached to mini-display port."
	xrandr --output $monitor_left --off 1>/dev/null
	status INFO "Turn off monitor attached to DVI on dock."
	xrandr --output $monitor_right --off 1>/dev/null

	status INFO "Release DHCP address for ethernet port on dock."
	sudo dhcpcd -k $ethernet 1>/dev/null

	status INFO "Connect to home wireless internet."
	sudo netctl start $wireless_network 1>/dev/null

	exit 0
}

case "$1" in
	on)
		# Turns on two external monitors and turns laptop monitor off
		dockon
		;;

	onall)
		# Turns on two external monitors and sets laptop monitor to the right 
		dockon all
		;;

	off)
		dockoff
		;;

	*)
		status FATAL "Usage: $0 <on|onall|off>"
		exit 1
esac