I still remember my google buddy talking about being aghast his intern (who was a CS major who obviously passed with flying colors and went to stanford or yale, I dont remember) not knowing what an IP address was.

I've conducted interviews of professed Unix devs or sysadmins, some years ago, who didn't know what the setuid bit was, or confused it with the sticky bit.

https://en.m.wikipedia.org/wiki/Setuid

https://en.m.wikipedia.org/wiki/Sticky_bit

Some. One was Comp. Engg. Not sure if any CS.

Heh. These days, a computer science degree is essentially equivalent to a coding degree. But depending on the decade and curriculum, it was traditionally a branch of mathematics and one could theoretically go all the way to PhD while never actually touching a practical computer.

There used to be a saying: Computer science is no more about computers than astronomy is about telescopes.

And that is why in this article, ESR has titled it, Things Every _Hacker_ Once Knew. Hackers usually have some sort of passion for the technology itself and want to understand ALL of the practical details and history of a thing. Hackers are _very much_ about computers.