curses

Fascinating, Ubuntu requires me to install libncurses5-dev to compile a curses-using program (Nethack). I wonder why so un-intuitive name.

Hidden feature on HP Photosmart Plus B210a printer?

I never realized, and I'm pretty certain the manual never said it, but you can just point a web browser at the IP address of a Photosmart Plus B210a multifunction printer, and get a control panel! You can see printer status, ink levels, and even make a scan there. Useful.
Found this out when pointing nmap at it for fun. A bit alarming is that there is no kind of authentication...