gistfile1.txt

~$ which ruby
/Users/mbrictson/.rbenv/shims/ruby
~$ gem env
RubyGems Environment:
  - RUBYGEMS VERSION: 2.0.3
  - RUBY VERSION: 2.0.0 (2013-06-27 patchlevel 247) [x86_64-darwin12.4.0]
  - INSTALLATION DIRECTORY: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
  - RUBY EXECUTABLE: /Users/mbrictson/.rbenv/versions/2.0.0-p247/bin/ruby
  - EXECUTABLE DIRECTORY: /Users/mbrictson/.rbenv/versions/2.0.0-p247/bin
  - RUBYGEMS PLATFORMS:
    - ruby
    - x86_64-darwin-12
  - GEM PATHS:
     - /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
     - /Users/mbrictson/.gem/ruby/2.0.0
  - GEM CONFIGURATION:
     - :update_sources => true
     - :verbose => true
     - :backtrace => false
     - :bulk_threshold => 1000
     - "gem" => "--no-ri --no-rdoc"
  - REMOTE SOURCES:
     - https://rubygems.org/
~$ gem which bundler-unload
/Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/bundler-unload-1.0.1/lib/bundler-unload.rb
~$ gem which rubygems-bundler/noexec
/Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/rubygems-bundler-1.2.0/lib/rubygems-bundler/noexec.rb
~$ gem list -d bundler-unload

*** LOCAL GEMS ***

bundler-unload (1.0.1)
    Author: Michal Papis
    Homepage: https://github.com/mpapis/bundler-unload
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Allow unloading bundler after Bundler.load
~$ gem list -d rubygems-bundler

*** LOCAL GEMS ***

rubygems-bundler (1.2.0)
    Authors: Josh Hull, Michal Papis
    Homepage: http://mpapis.github.com/rubygems-bundler
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Stop using bundle exec
~$ 

gistfile2.txt

~$ gem list -d bundler

*** LOCAL GEMS ***

bundler (1.3.5)
    Authors: André Arko, Terence Lee, Carl Lerche, Yehuda Katz
    Homepage: http://gembundler.com
    License: MIT
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    The best way to manage your application's dependencies

bundler-unload (1.0.1)
    Author: Michal Papis
    Homepage: https://github.com/mpapis/bundler-unload
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Allow unloading bundler after Bundler.load
~$ gem list -d guard

*** LOCAL GEMS ***

guard (1.8.1, 1.8.0)
    Author: Thibaud Guillaume-Gentil
    Homepage: http://guardgem.org
    Installed at (1.8.1): /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
                 (1.8.0): /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Guard keeps an eye on your file modifications

guard-livereload (1.4.0)
    Author: Thibaud Guillaume-Gentil
    Homepage: http://rubygems.org/gems/guard-livereload
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Guard gem for livereload

guard-rspec (3.0.2)
    Author: Thibaud Guillaume-Gentil
    Homepage: http://rubygems.org/gems/guard-rspec
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Guard gem for RSpec

guard-shell (0.5.1)
    Author: Joshua Hawxwell
    Homepage: http://github.com/hawx/guard-shell
    Installed at: /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    Guard gem for running shell commands
~$ rbenv which guard
/Users/mbrictson/.rbenv/versions/2.0.0-p247/bin/guard
~$ head -n 1 $( rbenv which guard )
#!/usr/bin/env ruby
~$ NOEXEC_DEBUG=1 guard
WARN: Unresolved specs during Gem::Specification.reset:
      lumberjack (>= 1.0.2)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
19:58:27 - ERROR - No Guardfile found, please create one with `guard init`.
~$ gem list -d lumberjack

*** LOCAL GEMS ***

lumberjack (1.0.4, 1.0.3)
    Author: Brian Durand
    Homepage: http://github.com/bdurand/lumberjack
    Installed at (1.0.4): /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
                 (1.0.3): /Users/mbrictson/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0

    A simple, powerful, and very fast logging utility that can be a drop
    in replacement for Logger or ActiveSupport::BufferedLogger.

gistfile3.txt

$ grep guard Gemfile.lock 
    guard (1.8.1)

$ rbenv shell 2.0.0-p195 
$ head -n 1 $( rbenv which guard )
#!/usr/bin/env ruby_noexec_wrapper