Zen of Linux

Torrent downloads (technically correct downloads via the BitTorrent protocol, filextension .torrent) are a resources saving way of providing large downloads for a large userbase. Made popular by the BitTorrent client torrent downloads can be handled by a number of clients - which is why so many do not speak of BitTorrent downloads that often anymore, […]

Speaking for a debian based system, here is a short list of very essential and useful commands:

To update your system: agt-get update, then apt-get upgrade. Also see: Installing/updating software on any Linux system.
The whole domain of /etc/init.d/xxx scripts, most prominently /etc/init.d/apache2 force-reload.Also compare these posts:
How do I exit the X Server from command line?
How do […]