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Date: Mon, 19 Aug 2002 14:01:43 +0100
From: Padraig Brady <padraig.brady@corvil.com>
Organization: Corvil Networks
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To: ilug@linux.ie
Subject: Re: [ILUG] expanding a string multiple times
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Niall O Broin wrote:
> On Mon, Aug 19, 2002 at 10:27:57AM +0100, Padraig Brady wrote:
> 
> 
>>>Well, here's a solution using seq and sed - IMHO its a rather dim solution
>>>and it definitely dies if STRING contains / (and probably has other ways to
>>>die too) and a bash loop would certainly be faster, but you know how to do
>>>it with loops :-)
>>>
>>>PREFIX=seq -s "" $NUMBER|sed "s/./$STRING/g"OA
>>
>>clever. A bit more robust is:
>>#first param is number of
>>#times to repeat second param
>>#
>>#e.g. quote=`repeat 3 '> '`
>>repeat() {
>>    seq -s , $1 | sed "s¬[0-9]\{1,\}[,]*¬$2¬g"
>>}
> 
> But it's such a crap colution anyway, why would you want to make it more
> robust ?
> 

Give yourself credit :-) it's a nice solution,
with just 2 lightweight processes. The same thing
coded in shell loops wouldn't be nearly as elegant
and not as scalable to boot.

Pádraig.


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