multi user RVM install

 
For a Multi-User install you would execute the following: 
$ curl -L https://get.rvm.io | sudo bash -s stable 

install path: /usr/local/rvm

source ~/.bashrc 重新加载修改过的bash配置文件
type rvm | head -1：如显示rvm is a shell function则说明RVM安装成功

rvm -v 显示当前rvm 版本

rvm list known 显示当前可用的ruby版本

rvmsudo rvm install 2.0.0

rvm use 2.0.0 --default