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Well good for you. We all learn better by trying, rather than being spoon-fed. With a nice pun like that, are you British?

You might need $1 in your awk rather than $0

It should still work...

While you are one the right track, it is best not to call an external program inside a loop because that will make it very slow. You could do it all in shell inside the loop, or use a single utility...