Changing the default run level in Red Hat 7
From MyWiki
Reference - http://www.itzgeek.com/how-tos/linux/centos-how-tos/change-default-runlevel-in-centos-7-rhel-7.html
systemctl get-default - gets the current default run level
systemctl list-units --type=target - lists the possible levels
systemctl set-default multi-user.target - sets a new run level
