apt-get install

I found an ultra-handy guide to displaying/setting the system clock in Linux (and, theoretically, most other UNIX-like operating systems. I always lose track somewhere when I am working with the system clock. Not via the Set Time/Date bit on the Gnome or KDE clocks, mind you, but from the CLI. So a guide like this is invaluable in helping me remember how to adjust the date and time, and then to save that as UTC time in the hardware clock.