Hmm, you're right. I was thinking of the = operator in sed, which is just a line count...
I'm quite rusty at this stuff... so give me a little bit to find out what I can...

Sed can do it easily. You'll have to get a little familiar with some simple regular expressions.

Here (http://www.grymoire.com/Unix/Sed.html#uh-8)'s a page with all kinds of useful information.
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