Show HN: I open sourced my systems programming cheat sheet

I learned more from the labs in that class than from many other classes combined. It was undoubtedly some of the hardest work I did during undergrad, but also some of the most fun and rewarding.

For me, 213 was the class after which I truly felt like a real programmer. By the end, so many layers of abstraction had been peeled back that it felt like there was no error or bug that I couldn't get to the bottom of if I dug deep enough.