Linux/bandwith

http://www.lartc.org/lartc.html
http://lartc.org/wondershaper/
http://superuser.com/questions/66574/how-to-throttle-bandwidth-on-a-linux-network-interface
http://chrisjrob.com/2011/03/31/limiting-the-bandwidth-usage-of-apt-get-and-wget/
http://www.matisse.net/bitcalc/?input_amount=50&input_units=kilobytes&notation=legacy