Sometimes we have to configure a new development machine, whether it is for ourselves or a friend. We often find that there are some little pieces of our environment that we have forgotten about or have neglected to document. This is my documentation for a ready-to-work development environment for Ruby on Rails.
https://blog.driftingruby.com/setting-up-ruby-on-rails-development-environment-on-mojave-10-14-2/