Virtual display + x11vnc for headless selenium and monitorin

#!/bin/bash
#Check user


if [[ $USER != "root" ]]; then
                echo "This script must be run as root!"
                exit 1
fi

#Run Xvfb with default settings as background job (RANDR mod + display port 99, firefox arg isn't really used)
#xvfb-run --server-args="-screen 0, 1920x1080x24" firefox &
Xvfb :99 -screen 0, 1920x1080x24 -nolisten tcp &

sleep 5

#Run x11vnc server on all interfaces, points to display 99, does not die on 0 users
x11vnc -shared -forever -display :99 -listen 0.0.0.0 &

netstat -pnlt | grep ':5900' | echo $(awk '{print $7}') | grep -o '[0-9]\+' | sudo kill $(awk '{print $0}') > /dev/null 2> /dev/null

CMD=$(sudo netstat -pnlt | grep ':5900')

if [ -z $CMD ]
then
    echo "VNC server started successfully.."
    #Disturb everyone
    wall remote display for selenium can be reached on all interfaces, port:5900
else
    echo "Failed to start VNC server"
fi