From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2011-04-16T01:41:45+09:00
Subject: Re: Extract a range i.e. svr[100..130] ?

On Fri, Apr 15, 2011 at 6:08 PM, Richard Sandoval <skolopen@yahoo.com> wrote:
> What best method could extract the range of a given list of servers?
>
> I have a field name on a UI that contains a list of servers and it can
> be a range such as
> svr[100..130].domain.local,prod[10..13].otherdomain.local.
>
>
> What would be my best approach to single each one of those nodes out to
> iterate through?

Sorry, if I didn't understand this well. You have a string containing
"svr[100..130].domain.local" and you want:

svr100.domain.local
svr101.domain.local
....
svr130.domain.local

?

If that's the case, then this might work:

a = "svr[100..130].domain.local"
m = a.match(/(.*?)\[(\d+)\.\.(\d+)\](.*)/)
(m[2].to_i..m[3].to_i).each {|num| puts "#{m[1]}#{num}#{m[4]}"}

=>
svr100.domain.local
svr101.domain.local
svr102.domain.local
[...snip...]
svr129.domain.local
svr130.domain.local

Jesus