Install Ruby on Rails on Ubuntu 12.04 LTS

永夜海

　　1:Update package repository.
1 sudo apt-get update  
　　2:Install git and Curl.
　　Git:是一个简单，快速，高效的版本控制系统。（对于安装ruby on rails 环境没有关系，只是为了在以后的开发过程中进行版本控制的时候使用。）
　　Curl:是一个根据web协议获取文件的简单命令行工具。
1 sudo apt-get install git  2 sudo apt-get install curl  
　　3:Install RVM and Dependencies.
1 curl -L get.rvm.io | bash -s stable  
　　load the RVM：
1 source ~/.rvm/scripts/rvm  
　　Then install additional dependencies specified by the RVM
1 sudo apt-get -y install build-essential openssl libreadline6 libreadline6-dev zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion  
　　4:Installing Javascript Runtime  参考：https://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager
1 sudo apt-add-repository ppa:chris-lea/node.js  2 sudo apt-get update  3 sudo apt-get install nodejs  
　　5:Install Ruby
1 rvm install 2.0.0  
　　Then select the Ruby version you want to use
1 rvm use 2.0.0 --default  
　　   在此处出现如下问题：
　　   
steven@ubuntu:/usr$ rvm use 2.0.0 --default    RVM is not a function, selecting rubies with 'rvm use ...' will not work.    You need to change your terminal emulator preferences to allow login shell.   Sometimes it is required to use `/bin/bash --login` as the command.   Please visit https://rvm.io/integration/gnome-terminal/ for a example.  
　　然后执行如下命令：
1 /bin/bash --login  
　　解决此问题。
　　You can check the version of ruby
1 ruby -v   
　　输出结果
ruby 2.0.0p247 (2013-06-27 revision 41674) [i686-linux]  
　　6：Install Rails
1 gem install rails  
　　7：test
　　
1 steven@ubuntu:/usr/RubyProject$ rails new demo  2       create    3       create  README.rdoc  4       create  Rakefile  5       create  config.ru  6       create  .gitignore
        ........  
1 steven@ubuntu:/usr/RubyProject/demo$ rails server   2 => Booting WEBrick   3 => Rails 4.0.0 application starting in development on http://0.0.0.0:3000   4 => Run `rails server -h` for more startup options   5 => Ctrl-C to shutdown server   6 [2013-10-28 21:45:41] INFO  WEBrick 1.3.1   7 [2013-10-28 21:45:41] INFO  ruby 2.0.0 (2013-06-27) [i686-linux]   8 [2013-10-28 21:45:41] INFO  WEBrick::HTTPServer#start: pid=23094 port=3000   9   10   11 Started GET "/" for 127.0.0.1 at 2013-10-28 21:46:26 -0700  12 Processing by Rails::WelcomeController#index as HTML  13   Rendered /home/steven/.rvm/gems/ruby-2.0.0-p247/gems/railties-4.0.0/lib/rails/templates/rails/welcome/index.html.erb (2.7ms)  14 Completed 200 OK in 41ms (Views: 20.2ms | Ac