Old books on UNIX. Are they of any value?

Question

Books

Hello!
While digging through the rubble, I found several books on Unix administration. Is there any useful info in them for today or is it all in the trash?
1) A. Robachevsky. The UNIX Operating System, BHV, 1997
2) Musumesi, Loukides UNIX Performance Tuning, O'Reilly, 2003
3) Nemeth, Snyder, Seabass, Hein. UNIX System Administrator's Guide, BHV and Peter, 2004. 923 pages

Answer 1

I don't understand the skepticism about books. They don’t come up with anything new, products don’t change dramatically from version to version either.
There have been a lot of questions lately about books, I even made a post about this https://vk.com/rubyboost?w=wall-111011401_115%2Fall
Author, Administration, like programming, is a very loose concept. You need to look for books / manuals / courses specifically for specific tasks, although it will be useful to read something to understand the internal structure of niks. Choose any book, read a couple of chapters, watch whether you like it or not

Answer 2

At the university, teachers probably give lectures on these books to students. But now there is a lot of useful information on the Internet.
And these books can be handed over to the commission, maybe someone will come in handy))

Answer 3

Robachevsky in waste paper, Musumesi did not read, so I can’t say anything, Nemeth comrades - it’s still good to study the very basics, but no more. There the book is very voluminous, but much has become outdated since then ...