The O'Reilly book is "Sed & Awk" published in the 90's (https://www.oreilly.com/library/view/sed-awk/1565922255/ https://www.oreilly.com/library/view/sed-awk/15

The O'Reilly book is "Sed & Awk" published in the 90's (https://www.oreilly.com/library/view/sed-awk/1565922255/ https://www.oreilly.com/library/view/sed-awk/1565922255/). The languages work together as a team (like lex and yacc). And the book takes about 2 hours to read. Unix is built on the premise of "lots of simple tools that fit together with pipes". Although this is like 1,000th article on how easy it is to learn awk. Why write yet another one? Awk in 20 Minutes (2015) https://news.ycombinator.com/item?id=23048054 https://news.ycombinator.com/item?id=23048054 Learn just a little Awk (2010) https://news.ycombinator.com/item?id=17322412 https://news.ycombinator.com/item?id=17322412 Learn Awk by Example (2019) https://news.ycombinator.com/item?id=22455779 https://news.ycombinator.com/item?id=22455779 it goes on and on... https://hn.algolia.com/?q=awk https://hn.algolia.com/?q=awk