When I first started in IT at Valdosta State, my boss had The AWK Programming Language. My initial dabbling with awk was based on the guidance of this book.

1. I am impressed Amazon has the book in stock.
2. I am impressed the sale price is over $70 (3 pages / $1 while typical is >10 pages / $1).

Admittedly, the authors are the ones who created awk. It is a first edition.

For you non-geeks: Sorry for taxing your brain cells. awk is perhaps my favorite program to use next to grep.