From: Wayne Brissette <wbrisett@...>
Date: 2012-07-17T10:43:38+09:00
Subject: Re: extracting part of a string

I'm sure somebody will come up with a one-liner (they always do). ;) But I would do this: 

ruby-1.9.3-p125 :001 > server_names = %w{server.corp.abc.com:/vol/test/xyz, server2.corp.def.com:/vol/stage/123, server3.corp.xyz.net:/vol/prod/abc}
 => ["server.corp.abc.com:/vol/test/xyz,", "server2.corp.def.com:/vol/stage/123,", "server3.corp.xyz.net:/vol/prod/abc"] 
ruby-1.9.3-p125 :002 > server_names.each do | name |
ruby-1.9.3-p125 :003 >     servername = name.split(":")
ruby-1.9.3-p125 :004?>   print "#{servername[0]}\n"
ruby-1.9.3-p125 :005?>   end
server.corp.abc.com
server2.corp.def.com
server3.corp.xyz.net
 => ["server.corp.abc.com:/vol/test/xyz,", "server2.corp.def.com:/vol/stage/123,", "server3.corp.xyz.net:/vol/prod/abc"] 


Wayne


On Jul 16, 2012, at 8:20 PM, Jon R. wrote:

> I have a file of the form
> 
> server.corp.abc.com:/vol/test/xyz
> server2.corp.def.com:/vol/stage/123
> server3.corp.xyz.net:/vol/prod/abc
> 
> and etc.
> 
> How do I return a list of only the server names?  In other words
> everything up to but not including the ":".  I can read the file in and
> can even split it at the ":" but can't seem to figure out how to only
> get server.corp.abc.com
> server2.corp.def.com
> server3.corp.xyz.net
> 
> Any help is appreciated.
> Thanks,
> Jon
> 
> -- 
> Posted via http://www.ruby-forum.com/.
>