Where is $GEM_PATH usually set?

Question

Where is $GEM_PATH set?

It clearly is being set as this shows:

echo $GEM_PATH
/Users/snowcrash/.rvm/gems/ruby-1.9.2-p318:/Users/snowcrash/.rvm/gems/ruby-1.9.2-p318@global

but it's not where I'd expect, e.g.

[app (master)]$ grep GEM_PATH ~/.bash_profile
[app (master)]$ grep GEM_PATH ~/.bashrc
[app (master)]$ 

EDIT

Neither is it here:

vim config/environment.rb 

# Load the rails application
require File.expand_path('../application', __FILE__)

# Initialize the rails application
Accounts::Application.initialize!

Answer 1

the default ruby is loaded when you source /path/to/rvm/scripts/rvm, and setting default ruby amount other sets GEM_HOME, GEM_PATH and PATH

Answer 2

(Edited) A few other places to check for GEM_PATH:

• config/environment.rb
• /etc/profile
• /etc/profile.d
• /etc/bashrc

See also: http://www.linuxfromscratch.org/blfs/view/6.3/postlfs/profile.html