[tlug] sed and awk

[Michael Moyle <michael@example.com>]

Just for fun: 

Does anyone have any examples of their favorite uses for sed and/or awk? 

I have not worked much with either tool, and want to see how they
interplay, and what each is best at. 

Or if you feel perl has superceded them, post a perl example. 

Right now I am using sed to go through and replace all the package names
in a bunch of of java files. And I started thinking about awk.

-michael