Build lighting from command line

HEY GUYS
PLIZ I NEED HELP ACTAULY BUILDING THE LIGHT VIA CMD
I HAVE TRIED LAUNCHING THE CMD EDITOR BUT ALL IT DOES IS LAUNC MY PROJECT AND THE ENGINE.
BEEN READING ALL THE STAFF ABOVE BUT I CANT GET IT TO WORK. PLIZ… A VIDEO WOULD BE NICE, THERES NON ON YOUTUBE.