安装ubuntu 下 ruby rails 环境等记录

gpg --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3

curl -L https://get.rvm.io | bash -s stable

source ~/.rvm/scripts/rvm

rvm -v

rvm install 2.1.5

rvm  2.1.5 --default

切换gem源:

gem source -r https://rubygems.org/ gem source -a https://ruby.taobao.org[/code]3.安装rails 
gem install rails
测试安装完成
rails -v
4.安装其它，安装nodejs, libmysqlclient-dev等，防止后面运行出错
sudo apt-get install nodejs
sudo apt-get install libmysqlclient-dev