From: Edward Middleton <edward.middleton@...>
Date: 2010-07-28T12:22:23+09:00
Subject: Re: Which Ruby is in use?

On 07/28/2010 11:20 AM, Hassan Schroeder wrote:
> On Tue, Jul 27, 2010 at 7:03 PM, Fabian Marin <fmg134s@yahoo.com> wrote:
>> hope I did not misunderstand the question, but would this work??
>>
>> %x{which $0}
>>
>> It seems too easy to work so I probably missed something :P
> 
> Thanks, but
> $ irb
>>> %x{which $0}
> => "/bin/sh\n"
> 
> isn't what I was looking for :-)

Thats because the $0 is being evaluated by the shell not ruby.  What you
actually want is %x{which #{$0}} which will give "which irb" to the
shell.  If the PATH environment is the same this should give you the
full path.

Edward