This made me think: If you wanted to make an 'inverted bottom-up' introduction to the suite of Unix command line tools, you could go in the direction of more-to

This made me think: If you wanted to make an 'inverted bottom-up' introduction to the suite of Unix command line tools, you could go in the direction of more-to-less-structured text formats and the common tools we use with them quite easily. 1. JSON: `curl` to get interesting JSON APIs, `gron` and `grep` to explore what's inside them, `jq` to process them into interesting formats. 2. CSV: Lots of good choices here. `xsv` is very popular but I think development ended a while back; I like the `csvkit` just because I like tabbing through the options you have here. `miller` I've heard good things about. Or go to the total opposite end of the direction, use Simon Willison's excellent `csvs-to-sqlite` in conjunction with `datasette`, and then do a foray into the many interesting things you can do in SQL. 3. Bespoke text formats - `sed`, `awk`, and possibly even Vim macros reign supreme here, along with the rest of the "standard" Unix text kit. The big benefits of introducing these last is that these tools work as a superset of many of the previous ones for added flexibility.