From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2005-09-10T00:02:58+09:00
Subject: Re: 'which' command for Ruby (like csh which?)

> -----Original Message-----
> From: Dan Bikle [mailto:dan.bikle@gmail.com] 
> Sent: Friday, September 09, 2005 12:53 AM
> To: ruby-talk ML
> Subject: 'which' command for Ruby (like csh which?)
> 
> 
> Hi,
> 
> suppose I have,
> 
> require "redgreenblue"
> in 
> runme.rb
> 
> Is there a way I can tell which 
> redgreenblue.rb file will get pulled in to runme.rb
> at run time?

Check your $LOAD_PATH.  Wherever redgreenblue.rb shows up first is the
one Ruby will use.
 
> Most UNIX shells have a 'which' builtin command which 
> offers similar behavior.
> 
> If I type 
> which runme
> the builtin which command will tell which runme file
> the shell would run should I choose to run it.
> 
> Thanks.
> 
> -Dan

The 'which' command may tell you where executables are.  There's a
File.which method in the 'ptools' package, but again that only looks for
executable files.  You could try the "find" package if you really want
to drill through your $LOAD_PATH.

Regards,

Dan