Ruby rails服务器不启动任何服务器

我是一个完全的RubyonRails新手 我刚刚安装了rails 3.2.13，创建了一个带有

rails new

的项目

但是，我无法使用以下命令启动服务器：

rails server

它返回下面的

rails

命令帮助消息（而不是WEBrick info），其中根本没有提到

server

命令。那么如何启动服务器呢？谢谢

Usage:
rails new APP_PATH [options]
Options:
-r, [--ruby=PATH]              # Path to the Ruby binary of your choice
                             # Default: /Users/nathanzylbersztejn/.rvm/rubies/ruby-2.0.0-p0/bin/ruby
-b, [--builder=BUILDER]        # Path to a application builder (can be a filesystem path or URL)
-m, [--template=TEMPLATE]      # Path to an application template (can be a filesystem path or URL)
  [--skip-gemfile]           # Don't create a Gemfile
  [--skip-bundle]            # Don't run bundle install
-G, [--skip-git]               # Skip Git ignores and keeps
-O, [--skip-active-record]     # Skip Active Record files
-S, [--skip-sprockets]         # Skip Sprockets files
-d, [--database=DATABASE]      # Preconfigure for selected database (options: mysql/oracle/postgresql/sqlite3/frontbase/ibm_db/sqlserver/jdbcmysql/jdbcsqlite3/jdbcpostgresql/jdbc)
                             # Default: sqlite3
-j, [--javascript=JAVASCRIPT]  # Preconfigure for selected JavaScript library
                             # Default: jquery
-J, [--skip-javascript]        # Skip JavaScript files
  [--dev]                    # Setup the application with Gemfile pointing to your Rails checkout
  [--edge]                   # Setup the application with Gemfile pointing to Rails repository
-T, [--skip-test-unit]         # Skip Test::Unit files
  [--old-style-hash]         # Force using old style hash (:foo => 'bar') on Ruby >= 1.9

Runtime options:
-f, [--force]    # Overwrite files that already exist
-p, [--pretend]  # Run but do not make any changes
-q, [--quiet]    # Suppress status output
-s, [--skip]     # Skip files that already exist

 Rails options:
-h, [--help]     # Show this help message and quit
-v, [--version]  # Show Rails version number and quit

Description:
  The 'rails new' command creates a new Rails application with a default
  directory structure and configuration at the path you specify.

  You can specify extra command-line arguments to be used every time
  'rails new' runs in the .railsrc configuration file in your home directory.

Note that the arguments specified in the .railsrc file don't affect the
defaults values shown above in this help message.

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您是否尝试过以下方法：

./script/rails s

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这与这个问题类似。你可以参考这个来清楚地解释你的问题

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我不得不从应用程序的根目录调用rails。我不明白。谢谢你为我指明了正确的方向