ruby rails

ruby版本 :ruby 1.9.2p0 (2010-08-18 revision 29036) [i686-linux]

下载地址：

1. wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.2-p0.tar.gz

rails版本：Rails 3.1.3

1. gem install rails

------------安装ok后开始使用

创建项目：rails new BBS

出现没安装sqlite3的错误：

gem install sqlite3

得先安装apt-get install libsqlite3-dev
-----------------------------------------------------

启动server：rails server

1. /usr/local/lib/ruby/gems/1.9.1/gems/execjs-1.2.13/lib/execjs/runtimes.rb:47:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable)

修改Gemfile，加上：

gem 'execjs'

gem 'therubyracer'