On Tue, 28 Jun 2011, Glenn Cogle wrote:
> Hi all sed gurus (& wannabes like me),
>
> Wanting to `sed` beyond my present understanding;
>
> echo abcdefghijklmnopqrstuvwxyz | sed 'keep first 5 chars, then append a Z
> to every fourth char thereafter, and keep the leftovers too'
>
> ie
>
> abcdefghiZjklmZnopqZrstuZvwxyZz
>
> I think sed would be capable of this - but haven't proven it yet.
>
> gc
Here is how I would do the first part of the problem.
Cut and paste this line onto your bash command prompt and hit enter;
rowofchars=abcdefghiZjklmZnopqZrstuZvwxyZz; echo "${rowofchars:0:5}Z"
Cheers Ross Drummond
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