gistfile1.txt

$ which ruby
/Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/bin/ruby

$ ruby -v
ruby 1.9.3dev (2010-09-09 trunk 29199) [x86_64-darwin10.4.0]

$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 1.3.7
  - RUBY VERSION: 1.9.3 (2010-09-09 patchlevel -1) [x86_64-darwin10.4.0]
  - INSTALLATION DIRECTORY: /Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/lib/ruby/gems/1.9.1
  - RUBY EXECUTABLE: /Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-10
  - GEM PATHS:
     - /Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/lib/ruby/gems/1.9.1
     - /Users/luis/.gem/ruby/1.9.1
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :benchmark => false
     - :backtrace => false
     - :bulk_threshold => 1000
     - "install" => "--no-ri --no-rdoc --env-shebang"
     - "update" => "--no-ri --no-rdoc --env-shebang"
  - REMOTE SOURCES:
     - http://rubygems.org/

$ gem list

*** LOCAL GEMS ***

minitest (1.7.1)
rake (0.8.7)
rdoc (2.5.8)

$ gem list rake -d

*** LOCAL GEMS ***

rake (0.8.7)
    Author: 
    Installed at: /Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/lib/ruby/gems/1.9.1

    This rake is bundled with Ruby

$ which rake
/Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/bin/rake
    
$ rake --version
rake, version 0.8.7

$ gem install rake
Successfully installed rake-0.8.7
1 gem installed

$ rake --version
/Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/lib/ruby/1.9.1/rubygems.rb:340:in `bin_path': can't find executable rake for rake-0.8.7 (Gem::Exception)
	from /Users/luis/.portile/apps/x86_64-apple-darwin10.4.0/ruby/1.9.3-trunk/bin/rake:19:in `<main>'