安装步骤注意事项： http://www.rubyonphp?name=rails" onclick="tagshow(event)" class="t_tag">rails.org/down

1.ruby推荐使用版本1.8.6，版本1.8.5、1.8.4、1.8.2还都可以使用，但是版本1.8.2不行


2.安装首先要有RubyGems：

RubyGems is the standard Ruby package manager. It's similar to apt-get, emerge, and other OS package managers.
Download
(extract, then run "ruby setup.rb")


3.rubygems安装好后，即可以安装rails：

gem install rails --include-dependencies
New versions of Rails can be installed the same way. Rails can also be downloaded as stand-alone packages.


4.创建应用程序  Create your application skeleton and start the server: rails path/to/your/new/application
cd path/to/your/new/application
ruby script/server

You're running Ruby on Rails! Follow the instructions on http://localhost:3000.

更新：gem update -y

svn：http://svn.rubyonrails.org/rails/tags/rel_2-0-1/

感谢分享，还没有时间去试验呢。