This is my newest post in my series about operating systems. Yes, it was last updated in 2019 – I’m a hobbyist blogger. This is a post about the command line, a computer topic, but it is for educating a non-technical (but tech-curious) audience. Most of the programmers in my audience will already know everything I have to say, and may be bored by some explanation of things they already know, though I intend to discuss some technical details of how computers work.