From: Jim Freeze <jim@...>
Date: 2003-09-27T02:02:17+09:00
Subject: Re: TCPSocket.gethostbyname difficulties

On Saturday, 27 September 2003 at  1:47:56 +0900, Peter wrote:
> >   How do I get the full name of the machine that I am on?
> >   My current method involves ifconfig -a to get the IP and
> >   nslookup to get the name.
> > 
> >   Is there a ruby -e one liner to do this?
> > 
> >   (Please forgive me if this is a stupid question.)
> 
> ruby -e "require 'socket'; puts Socket.gethostbyname(Socket.gethostname)[0]"
> 
> The extra Socket.gethostbyname(...)[0] is necessary because
> Socket.gethostname does not (necessarily) give the full hostname. Also if
> your hostname is listed in your /etc/hosts (or the equivalent under
> windows) as localhost, Socket#gethostbyname still returns the simple
> hostname and localhost as alias (Socket.gethostbyname(...)[1] gives the
> list of aliases). This happened on one machine I tested it on...
> 
> Peter
 
 When I run this, I only get the machine name, not the FQDN of my
 computer:

 ruby -e "require 'socket'; puts Socket.gethostbyname(Socket.gethostname)[0]"
 juno


 ruby -e "require 'socket'; p Socket.gethostbyname(Socket.gethostname)"
 ["juno", [], 2, "\235_/A"]

Is there a way to get the full name?

 

-- 
Jim Freeze
----------
Your lucky number has been disconnected.