Learning Linux/UNIX has by far yielded the most return in my life.
I started at 14. It turned into my career. It has been very lucrative and I still love it.
In contrast: I started learning how to draw digitally ~2 years ago and it’s mostly just painful and unrewarding. I feel like an emo teen again. I can’t quit though because I have strong feelings about the sunk costs :V
Agreed, my time spent learning Linux/unix has reaped rich dividends. A textbook on operating systems offers only an abstract intro to the concepts. Wading hip deep into a high powered open unix in which you configure and build your own kernels, filesystems, networks, and program both high and low level services — as Linux allows — greatly empowers the curious admin or developer, and offers insights into computer infratructure that far exceeds mere coursework or certifications.
