Setting Up a Ruby on Rails Environment on macOS

Let's install rbenv using git clone instead of apt or brew.

$ git clone https://github.com/sstephenson/rbenv.git ~/.rbenv

$ echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bashrc
$ echo 'eval "$(rbenv init -)"' >> ~/.bashrc

$ git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build

$ . ~/.bashrc

$ rbenv install -l
$ rbenv install 2.4.1

# After the installation is complete, restart the terminal or reload .bashrc

$ ruby --version
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-darwin16]

$ cd ~/.workspace/
$ gem install rails

$ rails --version
Rails 5.0.2

$ rails new ytyng-tools

$ cd ytyng-tools
$ rbenv local 2.4.1

$ rails s