I'm sure there are some other good books about the subject of Unix usage and scripting in general, and I've read some of them, but IMO, UPE is one of the best.
FWIW, here are some of my HN comments about The Unix Programming Environment book by Kernighan and Pike, over the years:
Then the man pages make more sense.
[0]https://en.wikipedia.org/wiki/The_Unix_Programming_Environme...