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Date: Sun, 22 Dec 2002 21:50:29 -0500
From: Mike Jeays <mj001@rogers.com>
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To: Kurt Bigler <kkb@breathhost.net>
Cc: BSD Freak <bsd-freak@mbox.com.au>,
	FreeBSD Questions <freebsd-questions@FreeBSD.ORG>
Subject: Re: Padding expr output
References: <BA2B968D.57E9%kkb@breathhost.net>
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Kurt Bigler wrote:

>on 12/22/02 3:57 PM, BSD Freak <bsd-freak@mbox.com.au> wrote:
>
>  
>
>>Hi all,
>>
>>I am usiung expr in a shell script and need to pad it's output to
>>always be 3 characters. An example will explain thing better:
>>
>>% expr 007 + 1
>>Output is 8
>>
>>I need the output to be 008
>>
>>
>>I checked the expr man page, but nothing there solves my problem.
>>Anyone out there got one?
>>    
>>
>
>Don't use expr to do the formatting.
>
>Use some sprintf-like capability in some scripting language that supports
>full functionality from the command-line.  I think both awk and perl have
>that capability in some form.  (Maybe someone else can be more specific.)
>
> 
>  Kurt Bigler
>
>
>  
>
>>Thanks in advance....
>>    
>>
>
>
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>  
>
In bash:

i=8
while [ ${#i} -lt "3" ]
do
  i="0"${i}
done
echo $i



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