Linux/BSD command line wizardry: Learn to think in sed, awk, and grep | Ars Technica
sed & awk: Dougherty, Dale, Robbins, Arnold: 9781565922259: Amazon.com: Books
Grep Awk Sed explained - TechPaste.Com
Dana Sibera on Twitter: "@decryption This was taped on the door of one of my first comp sci lecturers. Little did I know how much I would fall in love with awk