The Antifragile Chaos Monkey
One classic Unix intro is actually titled The Unix Programming Environment.(With such gems as -- from memory -- "you may find it useful to employ software version control", "some newer, more advanced editors such as vim or emacs", and "enormous files, 30 kb in size".)
I read it when you were knee-high to a grasshopper, Silas.
Cool! It's crazy that it's still in use -- the CTO bought it for me to read at my first software job (2012) at a hip startup.
Also VMS. Crazy how many tools in the OS are helpful for coding.