A practical guide to learning awk: 
Of all the Linux commands out there (and there are many), the three most quintessential seem to be sed, awk, and grep. Maybe it’s the arcane sound of their names, or the breadth of their potential use, or just their age, but when someone’s giving an example of a “Linuxy” command, it’s usually one of those three.
read more: Opensource.com sethkenlon
Supporting Open Source.
Have you tried: Diving with Sharks?