source ： http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you/1. git curl：
sudo apt-get install build-essential git-core curl
2. rvm：
curl -L get.rvm.io | bash -s stableecho '[[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm"' >> ~/.bashrc . ~/.bashrcsudo apt-get install build-essential openssl libreadline6 libreadline6-dev sudo apt-get install curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 sudo apt-get install libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion
3. ruby：
rvm install 1.9.3rvm use 1.9.3rvm --default use 1.9.3
4. rails：
gem install rails -v 3.2.3
5. mysql：
sudo apt-get install libmysqlclient-dev
有了你，我不再作孤飞于蓝天的雄鹰，
