On: There's a Relational Database in Your Unix CLI

[gumby]

> Did you know that there’s a relational database hiding in your Unix shell?

No I did not know this because there isn't.

There likely happens to be a 'join' program installed on your computer and like any program it can be invoked from your shell.

[shakna → gumby]

> There likely happens to be a 'join' program installed on your computer and like any program it can be invoked from your shell.

'join' is a Linux coreutil, so though it might not always be there for strictly UNIX, it will be for Linux.

Calling a coreutil part of the shell does make sense in some contexts, and I'd suggest when talking about what you can do with a cli, this is one of those times.

[HillaryBriss → shakna]

there's also this list: https://en.wikipedia.org/wiki/List_of_Unix_commands which includes join (and, importantly, awk), as you pointed out