Around 2000 or so, I used to work in tech support for a software company who had like 5000 Windows-based customers and 5 running Solaris. My boss chose me to learn Solaris when the previous “expert” left. I bought this book and started hacking. Good times!
I have/had a bunch of these books. Some got lost but I have the electronic versions of them.
This is one other book I fondly remember. UNIX For Application Developers. From 1991 I think. I vaguely remember a statement in the intro along the lines of Windows being user friendly but UNiX being expert friendly. :-)
Couldn’t find a better image.