And military contractor!

I think teens abandoned Facebook like 10 years ago

Debian also has the latest security patches

Did you go buster -> bullseye -> bookworm or just straight to bookworm? It sounds like something got screwed up with the usr merge.

Sony and Panasonic still make Blu-ray players… Sony just stopped making the blank media IIRC

Books will teach the essentials: my core UNIX knowledge comes from an SVR4 book I read in the late 2000s (a decade or more after it was relevant) and it’s still applicable today