So.. story time. While at the university, there was that project where we had to create an elevator simulator in C as a way to learn threading and mutexes. All

So.. story time. While at the university, there was that project where we had to create an elevator simulator in C as a way to learn threading and mutexes. All the tmp files were stored in ./tmp/. In between build/run/debug cycle, I would "rm -fr ./tmp". But once, I did "rm -fr . /tmp". At that time I didn't know any better and had no version control. I had to redo that 2 weeks in a night, which turn out to be more easier than expected considered I had just written the code. My lessons from that: A) Version control, pushed somewhere else. B) Use simple build scripts.