Part 5 of the Operating Systems Series - Based on "Operating Systems: Three Easy Pieces". You can find chapter 4 here: Chapter-4 Picture this: You open your terminal, type "ls -l", hit enter, and boom ...
If you use Windows today and type ls, cat, grep, or awk in a terminal, there is a good chance something useful will happen. That was not always true. For most of the history of personal computing, ...