在ubuntu下安装ruby on rails环境
sudo apt-get install ruby-full
sudo apt-get install rubygems
sudo apt-get install rails
sudo apt-get install mysql-server
apt-cache search libmysqlclient
sudo apt-get install libmysqlclient16-dev
sudo apt-get install rubygems
sudo apt-get install rails
sudo apt-get install mysql-server
apt-cache search libmysqlclient
sudo apt-get install libmysqlclient16-dev