Dozens of start-ups unveil their lovingly built sites each day, but most people already have their fill of social network profiles to update and friend requests to weigh.

Linux hosts always fill their process tables with a bunch of more-or-less simultaneous programs: network protocol daemons, cron managers, the kernel itself, and often much more.

The lights on your network hub will start blinking and after a few seconds, the 'Query Results' list box will fill.