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Development Tools Installing a Ruby Development Environment Installing a Ruby Development Environment Installing Ruby on Mac

Posted by David Ryan
David Ryan
Courses Plus Student 14,981 Points

Ruby issues

At the end after installing all the gems he goes to his treehouse directory??? What am I suppose to type?

2 Answers

Salman Akram
PLUS
Salman Akram
Courses Plus Student 40,065 Points
Salman Akram
Salman Akram
Courses Plus Student 40,065 Points

Hi David,

Because he has a file called "treehouse" in the desktop, I think Jason Seifer doesn't explain very well.

Let me help you.

  • Go to your desktop - let's type in your terminal: "cd Desktop"
  • then create new file - type: "rails new treehouse" (you will find new folder called treehouse in the desktop)
  • then locate file you create - type: "cd treehouse"

  • then see the lists inside the file - type: "ls"

  • then lastly to run server - type: "rails s" or "rails server"

  • now open your Chrome browser - type : http://localhost:3000

Hope that helps. :)

David Ryan
David Ryan
Courses Plus Student 14,981 Points

Hello and thanks! Can you help me with this:

Last login: Wed May  6 18:13:27 on ttys000
Davids-MacBook-Pro:~ DavidRyan$ clear
Davids-MacBook-Pro:~ DavidRyan$ cd Desktop
Davids-MacBook-Pro:Desktop DavidRyan$ rails new treehouse
      create  
      create  README.rdoc
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
      create  app
      create  app/assets/javascripts/application.js
      create  app/assets/stylesheets/application.css
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/views/layouts/application.html.erb
      create  app/assets/images/.keep
      create  app/mailers/.keep
      create  app/models/.keep
      create  app/controllers/concerns/.keep
      create  app/models/concerns/.keep
      create  bin
      create  bin/bundle
      create  bin/rails
      create  bin/rake
      create  bin/setup
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/secrets.yml
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/assets.rb
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/cookies_serializer.rb
      create  config/initializers/filter_parameter_logging.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/session_store.rb
      create  config/initializers/wrap_parameters.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  lib
      create  lib/tasks
      create  lib/tasks/.keep
      create  lib/assets
      create  lib/assets/.keep
      create  log
      create  log/.keep
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
      create  public/favicon.ico
      create  public/robots.txt
      create  test/fixtures
      create  test/fixtures/.keep
      create  test/controllers
      create  test/controllers/.keep
      create  test/mailers
      create  test/mailers/.keep
      create  test/models
      create  test/models/.keep
      create  test/helpers
      create  test/helpers/.keep
      create  test/integration
      create  test/integration/.keep
      create  test/test_helper.rb
      create  tmp/cache
      create  tmp/cache/assets
      create  vendor/assets/javascripts
      create  vendor/assets/javascripts/.keep
      create  vendor/assets/stylesheets
      create  vendor/assets/stylesheets/.keep
         run  bundle install
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/yaml.rb:4:in `<top (required)>':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require': dlopen(/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/x86_64-darwin14/psych.bundle, 9): Library not loaded: /usr/local/lib/libyaml-0.2.dylib (LoadError)
  Referenced from: /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/x86_64-darwin14/psych.bundle
  Reason: image not found - /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/x86_64-darwin14/psych.bundle
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/psych.rb:1:in `<top (required)>'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/yaml.rb:5:in `<top (required)>'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems.rb:624:in `load_yaml'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/config_file.rb:328:in `load_file'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/config_file.rb:197:in `initialize'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems.rb:297:in `new'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems.rb:297:in `configuration'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/rubygems_integration.rb:49:in `configuration'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/rubygems_integration.rb:72:in `sources='
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/fetcher.rb:207:in `specs'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/source/rubygems.rb:324:in `block (2 levels) in remote_specs'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/source/rubygems.rb:322:in `each'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/source/rubygems.rb:322:in `block in remote_specs'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/index.rb:9:in `build'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/source/rubygems.rb:305:in `remote_specs'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/source/rubygems.rb:79:in `specs'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:203:in `block (2 levels) in index'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:201:in `each'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:201:in `block in index'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/index.rb:9:in `build'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:198:in `index'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:192:in `resolve'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:132:in `specs'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/definition.rb:121:in `resolve_remotely!'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/installer.rb:79:in `run'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/installer.rb:18:in `install'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/cli/install.rb:80:in `run'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/cli.rb:157:in `install'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/vendor/thor/lib/thor/command.rb:27:in `run'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/vendor/thor/lib/thor/invocation.rb:126:in `invoke_command'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/vendor/thor/lib/thor.rb:359:in `dispatch'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/vendor/thor/lib/thor/base.rb:440:in `start'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/cli.rb:10:in `start'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/bin/bundle:20:in `block in <main>'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/friendly_errors.rb:7:in `with_friendly_errors'
    from /Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/bin/bundle:18:in `<main>'
Fetching gem metadata from https://rubygems.org/...........         run  bundle exec spring binstub --all
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/shared_helpers.rb:78: warning: Insecure world writable dir /usr/local in PATH, mode 040777
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/shared_helpers.rb:78: warning: Insecure world writable dir /usr/local in PATH, mode 040777
* bin/rake: spring inserted
* bin/rails: spring inserted
Davids-MacBook-Pro:Desktop DavidRyan$ cd treehouse
Davids-MacBook-Pro:treehouse DavidRyan$ rails s
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/railties-4.2.1/lib/rails/app_rails_loader.rb:39: warning: Insecure world writable dir /usr/local in PATH, mode 040777
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0/gems/bundler-1.9.6/lib/bundler/shared_helpers.rb:78: warning: Insecure world writable dir /usr/local in PATH, mode 040777
/Users/DavidRyan/.rbenv/versions/2.2.2/lib/ruby/2.2.0/yaml.rb:4:in `<top (required)>':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
bin/rails:6: warning: already initialized constant APP_PATH
/Users/DavidRyan/Desktop/treehouse/bin/rails:6: warning: previous definition of APP_PATH was here
Usage: rails COMMAND [ARGS]

The most common rails commands are:
 generate    Generate new code (short-cut alias: "g")
 console     Start the Rails console (short-cut alias: "c")
 server      Start the Rails server (short-cut alias: "s")
 dbconsole   Start a console for the database specified in config/database.yml
             (short-cut alias: "db")
 new         Create a new Rails application. "rails new my_app" creates a
             new application called MyApp in "./my_app"

In addition to those, there are:

 destroy      Undo code generated with "generate" (short-cut alias: "d")
 plugin new   Generates skeleton for developing a Rails plugin
 runner       Run a piece of code in the application environment (short-cut alias: "r")

All commands can be run with -h (or --help) for more information. Davids-MacBook-Pro:treehouse DavidRyan$

Salman Akram
PLUS
Salman Akram
Courses Plus Student 40,065 Points
Salman Akram
Salman Akram
Courses Plus Student 40,065 Points

Hi David,

Sure! Can you type below:

first - "brew install libyaml" and then - "rvm reinstall 2.2.2"

Let me know.

David Ryan
David Ryan
Courses Plus Student 14,981 Points

Salman please see below:

All commands can be run with -h (or --help) for more information. Davids-MacBook-Pro:treehouse DavidRyan$ brew install libyaml /usr/local/bin/brew: /usr/local/Library/brew.rb: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby: bad interpreter: No such file or directory /usr/local/bin/brew: line 21: /usr/local/Library/brew.rb: Undefined error: 0 Davids-MacBook-Pro:treehouse DavidRyan$ rvm reinstall 2.2.2 -bash: rvm: command not found Davids-MacBook-Pro:treehouse DavidRyan$

Salman Akram
Salman Akram
Courses Plus Student 40,065 Points

Oh you have to leave treehouse folder to the root outside. Let's type: "cd "

and then do same the following methods - first - "brew install libyaml" and then - "rvm reinstall 2.2.2"