Command Line Cheat Sheet for Mac and Linux. I know these, but always good to have on hand!
Linux Directory Structure (File System Structure) Explained with Examples
Learn Basic Linux Commands with This Downloadable Cheat Sheet
The History of Linux. #infografia #infographic
linux admin quick reference
Ubuntu has turned into the Mac of the Linux world. Users are stereotyped as the hipsters and stuff. I used Ubuntu at first, but after realising that it was burning up my CPU all the time, I had to switch flavours.
The state of Linux (infographic) | Ramblings from the Pingdom team about the Internet and web tech