拾ってきたrailsのサンプルファイルをtestフォルダに展開して
$ cd test
$ rails s
としたときに下記のエラーが出てきてサーバーが立ち上がりません。
どうすればいいでしょうか？

Usage:
rails new APP_PATH [options]
Options:
-r, [--ruby=PATH] # Path to the Ruby binary of your choice
# Default: /Users/mikeneko/.rvm/rubies/ruby-1.9.2-head/bin/ruby
-d, [--database=DATABASE] # Preconfigure for selected database (options: mysql/oracle/postgresql/sqlite3/frontbase/ibm_db)
# Default: sqlite3
-b, [--builder=BUILDER] # Path to an application builder (can be a filesystem path or URL)
-m, [--template=TEMPLATE] # Path to an application template (can be a filesystem path or URL)
[--dev] # Setup the application with Gemfile pointing to your Rails checkout
[--edge] # Setup the application with Gemfile pointing to Rails repository
[--skip-gemfile] # Don't create a Gemfile
-O, [--skip-active-record] # Skip Active Record files
-T, [--skip-test-unit] # Skip Test::Unit files
-J, [--skip-prototype] # Skip Prototype files
-G, [--skip-git] # Skip Git ignores and keeps
中略
Description:
The 'rails new' command creates a new Rails application with a default
directory structure and configuration at the path you specify.
Example:
rails new ~/Code/Ruby/weblog
This generates a skeletal Rails installation in ~/Code/Ruby/weblog.
See the README in the newly created application to get going.