From: Joel VanderWerf <vjoel@...>
Date: 2008-06-18T03:04:36+09:00
Subject: Re: detect if required or executed?

I. E. Smith-Heisters wrote:
> Hi all,
> 
> Is anyone aware of a way to detect if a file has been required from
> another ruby process, or is being executed from the commandline? I've
> been doing this hack:
> 
> do_executable_behavior unless ENV['DONT_RUN']
> 
> but that's clearly not ideal. I though maybe I could add something to
> the bangline? But that wouldn't help if someone runs the script
> indirectly with "ruby script.rb". Something like Module.included would
> be great if there was a "required" method, I could just set a DONT_RUN
> variable there.
> 
> Thanks,
> Ian

There was a good discussion recently about making sure only one instance 
of a script is running, maybe that helps:

http://groups.google.com/group/ruby-talk-google/browse_thread/thread/b658d9b0dbfd59f8


-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407