Ruby on rails 如何在ubuntu 12.04上启动rails服务器localhost:3000

我是RubyonRails的初学者

我在官方网页上做了所有的事情。(http://rubyonrails.org/download)

我试着开始新的项目，但是本地主机在ubuntu 12.04上不起作用

我使用以下命令：

rails new /home/mehmet/Desktop/test/

以下是控制台输出：

create  
  create  README.rdoc
  create  Rakefile
  create  config.ru
  create  .gitignore
  create  Gemfile
  create  app
  create  app/assets/images/rails.png
  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/mailers
  create  app/models
  create  app/views/layouts/application.html.erb
  create  app/mailers/.gitkeep
  create  app/models/.gitkeep
  create  config
  create  config/routes.rb
  create  config/application.rb
  create  config/environment.rb
  create  config/environments
  create  config/environments/development.rb
  create  config/environments/production.rb
  create  config/environments/test.rb
  create  config/initializers
  create  config/initializers/backtrace_silencers.rb
  create  config/initializers/inflections.rb
  create  config/initializers/mime_types.rb
  create  config/initializers/secret_token.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  doc
  create  doc/README_FOR_APP
  create  lib
  create  lib/tasks
  create  lib/tasks/.gitkeep
  create  lib/assets
  create  lib/assets/.gitkeep
  create  log
  create  log/.gitkeep
  create  public
  create  public/404.html
  create  public/422.html
  create  public/500.html
  create  public/favicon.ico
  create  public/index.html
  create  public/robots.txt
  create  script
  create  script/rails
  create  test/fixtures
  create  test/fixtures/.gitkeep
  create  test/functional
  create  test/functional/.gitkeep
  create  test/integration
  create  test/integration/.gitkeep
  create  test/unit
  create  test/unit/.gitkeep
  create  test/performance/browsing_test.rb
  create  test/test_helper.rb
  create  tmp/cache
  create  tmp/cache/assets
  create  vendor/assets/javascripts
  create  vendor/assets/javascripts/.gitkeep
  create  vendor/assets/stylesheets
  create  vendor/assets/stylesheets/.gitkeep
  create  vendor/plugins
  create  vendor/plugins/.gitkeep
     run  bundle install
/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/generators/app_base.rb:254: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:263: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
Fetching gem metadata from https://rubygems.org/...........
Fetching gem metadata from https://rubygems.org/..
Using rake (10.0.3) 
Using i18n (0.6.1) 
Using multi_json (1.5.0) 
Using activesupport (3.2.9) 
Using builder (3.0.4) 
Using activemodel (3.2.9) 
Using erubis (2.7.0) 
Using journey (1.0.4) 
Using rack (1.4.1) 
Using rack-cache (1.2) 
Using rack-test (0.6.2) 
Using hike (1.2.1) 
Using tilt (1.3.3) 
Using sprockets (2.2.2) 
Using actionpack (3.2.9) 
Using mime-types (1.19) 
Using polyglot (0.3.3) 
Using treetop (1.4.12) 
Using mail (2.4.4) 
Using actionmailer (3.2.9) 
Using arel (3.0.2) 
Using tzinfo (0.3.35) 
Using activerecord (3.2.9) 
Using activeresource (3.2.9) 
Using bundler (1.2.3) 
Using coffee-script-source (1.4.0) 
Using execjs (1.4.0) 
Using coffee-script (2.2.0) 
Using rack-ssl (1.3.2) 
Using json (1.7.5) 
Using rdoc (3.12) 
Using thor (0.16.0) 
Using railties (3.2.9) 
Using coffee-rails (3.2.2) 
Using jquery-rails (2.1.4) 
Using rails (3.2.9) 
Using sass (3.2.4) 
Using sass-rails (3.2.5) 
Using sqlite3 (1.3.6) 
Using uglifier (1.3.0) 
Your bundle is complete! Use `bundle show [gemname]` to see where a bundled gem is installed.

你知道吗？如何创建新项目以及如何查看localhost:3000

编辑：

我想，我的问题是服务器

我使用rails s命令启动服务器，它会出现一些错误：

/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/script_rails_loader.rb:11: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:197: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from /usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
    from /usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `block in require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in `require'
    from /home/mehmet/Desktop/testtt/config/application.rb:7:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `block in <top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `tap'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'
mehmet@vefanet:~/Desktop/testtt$ rails s -p 3005 
/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/script_rails_loader.rb:11: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:197: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from /usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
    from /usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `block in require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in `require'
    from /home/mehmet/Desktop/testtt/config/application.rb:7:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `block in <top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `tap'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'
mehmet@vefanet:~/Desktop/testtt$ rails s
/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/script_rails_loader.rb:11: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:197: warning: Insecure world writable dir /home/mehmet/.rvm/bin in PATH, mode 040777
/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)
    from /usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:5:in `<module:ExecJS>'
    from /usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:4:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee_script.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in `block in require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `each'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in `require'
    from /home/mehmet/Desktop/testtt/config/application.rb:7:in `<top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `require'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in `block in <top (required)>'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `tap'
    from /usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/script\u rails\u loader.rb:11：警告：路径中的不安全世界可写目录/home/mehmet/.rvm/bin，模式040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:197:警告：路径中的不安全世界可写目录/home/mehmet/.rvm/bin，模式040777
/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:在“自动检测”中：找不到JavaScript运行时。看见https://github.com/sstephenson/execjs 获取可用运行时的列表。（ExecJS:：RuntimeUnavailable）
来自/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:5:in`'
来自/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:4:in`'
from/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee\u script.rb:1:in'require'
来自/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee\u script.rb:1:in`'
from/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in'require'
来自/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in`'
from/usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in'require'
来自/usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in`'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in'require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in'block（2层）in require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in'each'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in'block in require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in'each'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in'require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in'require'
from/home/mehmet/Desktop/testtt/config/application.rb:7:in`'
from/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in'require'
from/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in'block in'
from/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in'tap'
来自/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in`'
来自脚本/rails:6:in'require'
来自脚本/rails:6:in`'
mehmet@vefanet：~/Desktop/testtt$rails s-p3005
/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/script\u rails\u loader.rb:11：警告：路径中的不安全世界可写目录/home/mehmet/.rvm/bin，模式040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:197:警告：路径中的不安全世界可写目录/home/mehmet/.rvm/bin，模式040777
/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:在“自动检测”中：找不到JavaScript运行时。看见https://github.com/sstephenson/execjs 获取可用运行时的列表。（ExecJS:：RuntimeUnavailable）
来自/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:5:in`'
来自/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs.rb:4:in`'
from/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee\u script.rb:1:in'require'
来自/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee\u script.rb:1:in`'
from/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in'require'
来自/usr/lib/ruby/gems/1.9.1/gems/coffee-script-2.2.0/lib/coffee-script.rb:1:in`'
from/usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in'require'
来自/usr/lib/ruby/gems/1.9.1/gems/coffee-rails-3.2.2/lib/coffee-rails.rb:1:in`'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in'require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in'block（2层）in require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in'each'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in'block in require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in'each'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in'require'
from/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler.rb:128:in'require'
from/home/mehmet/Desktop/testtt/config/application.rb:7:in`'
from/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in'require'
from/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:53:in'block in'
from/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in'tap'
来自/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/commands.rb:50:in`'
来自脚本/rails:6:in'require'
来自脚本/rails:6:in`'
mehmet@vefanet：~/Desktop/testtt$rails
/usr/lib/ruby/gems/1.9.1/gems/railties-3.2.9/lib/rails/script\u rails\u loader.rb:11：警告：路径中的不安全世界可写目录/home/mehmet/.rvm/bin，模式040777
/usr/lib/ruby/gems/1.9.1/gems/bundler-1.2.3/lib/bundler/runtime.rb:197:警告：路径中的不安全世界可写目录/home/mehmet/.rvm/bin，模式040777
/usr/lib/ruby/gems/1.9.1/gems/execjs-1.4.0/lib/execjs/runtimes.rb:51:在“自动检测”中：找不到JavaScript运行时。看见https://github.com/sstephenson/execjs 获取可用运行时的列表。（ExecJS:：RuntimeUnavailable）
从…起
cd /home/mehmet/Desktop/test/

bundle install

rails s

bundle install
rails s

rails s -p 3005