Links
Debian systemd Wiki
systemd’s dependencies and installation footprint
Managing Services on Linux With systemd
systemd - Gentoo Wiki
freedesktop.org - systemctl
systemctl documentation (man page)
Free Port 80
systemctl disable bonescript.service systemctl disable bonescript.socket systemctl disable bonescript-autorun.service
From: stackoverflow.com/questions/16554756/how-do-i-release-port-80-on-a-beaglebone-so-i-can-use-it
From: thefabric.com/beaglebone-startup-items
Note: The disable command does not stop a unit. To stop a unit, issue a stop command after the disable command, or reboot the system.