$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.8.24
  - RUBY VERSION: 1.9.3 (2012-04-20 patchlevel 194) [x86_64-darwin12.0.0]
  - INSTALLATION DIRECTORY: /Users/myusername/.rvm/gems/ruby-1.9.3-p194
  - RUBY EXECUTABLE: /Users/myusername/.rvm/rubies/ruby-1.9.3-p194/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/myusername/.rvm/gems/ruby-1.9.3-p194/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-12
  - GEM PATHS:
     - /Users/myusername/.rvm/gems/ruby-1.9.3-p194
     - /Users/myusername/.rvm/gems/ruby-1.9.3-p194@global
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
  - REMOTE SOURCES:
     - http://rubygems.org/


$ rvm info

ruby-1.9.3-p194:

  system:
    uname:       "Darwin AB-MacBookPro13.local 12.2.0 Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64 x86_64"
    bash:        "/bin/bash => GNU bash, version 3.2.48(1)-release (x86_64-apple-darwin12)"
    zsh:         "/bin/zsh => zsh 4.3.11 (i386-apple-darwin12.0)"

  rvm:
    version:      "rvm 1.14.11 (master) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/]"
    updated:      "2 months 17 days 23 hours 4 minutes 48 seconds ago"

  ruby:
    interpreter:  "ruby"
    version:      "1.9.3p194"
    date:         "2012-04-20"
    platform:     "x86_64-darwin12.0.0"
    patchlevel:   "2012-04-20 revision 35410"
    full_version: "ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-darwin12.0.0]"

  homes:
    gem:          "/Users/myusername/.rvm/gems/ruby-1.9.3-p194"
    ruby:         "/Users/myusername/.rvm/rubies/ruby-1.9.3-p194"

  binaries:
    ruby:         "/Users/myusername/.rvm/rubies/ruby-1.9.3-p194/bin/ruby"
    irb:          "/Users/myusername/.rvm/rubies/ruby-1.9.3-p194/bin/irb"
    gem:          "/Users/myusername/.rvm/rubies/ruby-1.9.3-p194/bin/gem"
    rake:         "/Users/myusername/.rvm/gems/ruby-1.9.3-p194@global/bin/rake"

  environment:
    PATH:         "/usr/local/heroku/bin:/Users/myusername/local/node/bin:/Users/myusername/.rvm/gems/ruby-1.9.3-p194/bin:/Users/myusername/.rvm/gems/ruby-1.9.3-p194@global/bin:/Users/myusername/.rvm/rubies/ruby-1.9.3-p194/bin:/Users/myusername/.rvm/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/usr/local/git/bin:/usr/local/mysql/bin"
    GEM_HOME:     "/Users/myusername/.rvm/gems/ruby-1.9.3-p194"
    GEM_PATH:     "/Users/myusername/.rvm/gems/ruby-1.9.3-p194:/Users/myusername/.rvm/gems/ruby-1.9.3-p194@global"
    MY_RUBY_HOME: "/Users/myusername/.rvm/rubies/ruby-1.9.3-p194"
    IRBRC:        "/Users/myusername/.rvm/rubies/ruby-1.9.3-p194/.irbrc"
    RUBYOPT:      ""
    gemset:       ""