100% this. I had a class called "software tools" taught by a bored grad student that covered the standard unix utils (including "sed", "awk", "lex", "yacc", etc.). That's the single most relevant class I took in 6 years of undergrad and grad school and I use its skills virtually every single day ("formal languages and automata" was fun, but I've only ever written a single LALR parser since university and that was on a personal project).