安装 RVM
RVM(Ruby Version Manager)
curl -L https://get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh
rvm list known
RVM(Ruby Version Manager)
curl -L https://get.rvm.io | bash -s stable
source /etc/profile.d/rvm.sh
rvm list known
2.安装Ruby1.9.2
rvm install ruby-1.9.2-p320
rvm install ruby-1.9.2-p320