markdown Ruby on Rails的安装环境（Mac OS X 10.9或更高版本）

Posted 2021-05-06

## 1. Install Command line tools on terminal
`xcode-select --install`

## 2. Install Homebrew
`ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"`

## 3. Install rbenv
`brew update`  
`brew install rbenv`  
`echo 'eval "$(rbenv init -)"' >> ~/.bash_profile`  
`source ~/.bash_profile`

## 4. Build Ruby with rbenv
#### You can find the newest version of Ruby with the command `rbenv install -l`
`rbenv install 2.4.2`

## 5. Set default Ruby
`rbenv global 2.4.2`

## 6. Install rails
`gem install rails --no-document`

## 7. Check the environment
`rails new myapp`  
`cd myapp`  
`rails server`  

## 8. Go to http://localhost:3000 in your browser, and you should see the ‘Yay! You’re on Rails!’ page.