Julia Evans has this amazing list of things to learn about Linux. I think, it doesn’t matter how new or experienced you are with the operating system, you’ll find a few points in this list that you either know nothing about or know very little.
Personally, I’ve been using and administrating Linux systems for almost two decades now, and my own knowledge of the things on that list is either very limited or not existing. Sure, I know about pipes and signals, but even with basic things like permissions there are some tricky questions that I’m not sure I can get right on the first go.
Some of the topics mentioned are simple and straight-forward and will only need a few minutes or a couple of hours to get up to speed with. Others – are huge areas which might take years, if not decades (like networking, for example).
I look forward to Julia’s drawings covering some of these.