From: Joel VanderWerf <joelvanderwerf@...>
Date: 2010-07-28T07:52:05+09:00
Subject: Re: Which Ruby is in use?

Hassan Schroeder wrote:
> On Tue, Jul 27, 2010 at 3:10 PM, Joel VanderWerf
> <joelvanderwerf@gmail.com> wrote:
> 
>> Maybe this will work?
>>
>>>> File.join *Config::CONFIG.values_at("bindir", "ruby_install_name")
>> => "/usr/local/bin/ruby"
> 
> Works in a Rails console, but not a Ruby program. But thanks, now
> that I consider it I should be able to work with that  :-)

Hm, that's surprising. I tested it in ruby and jruby programs. What's 
the problem?

$ ruby -v -rrbconfig -e 'p File.join(*Config::CONFIG.values_at("bindir", 
"ruby_install_name"))'
ruby 1.8.7 (2010-06-23 patchlevel 299) [x86_64-linux]
"/usr/local/bin/ruby"

$ ruby19 -v -rrbconfig -e 'p 
File.join(*Config::CONFIG.values_at("bindir", "ruby_install_name"))'
ruby 1.9.2dev (2010-07-02 revision 28524) [x86_64-linux]
"/usr/local/bin/ruby19"

$ jruby -v -rrbconfig -e 'p 
File.join(*Config::CONFIG.values_at("bindir", "ruby_install_name"))'
jruby 1.5.0 (ruby 1.8.7 patchlevel 249) (2010-05-12 6769999) (Java 
HotSpot(TM) 64-Bit Server VM 1.6.0_20) [amd64-java]
"/usr/local/jruby/bin/jruby"