$ rails runner 'pp ActiveSupport::Dependencies.autoload_paths'
=>
["/home/alfredo/rails_apps/shk/app/assets",
"/home/alfredo/rails_apps/shk/app/controllers",
"/home/alfredo/rails_apps/shk/app/helpers",
"/home/alfredo/rails_apps/shk/app/mailers",
"/home/alfredo/rails_apps/shk/app/models",
"/home/alfredo/rails_apps/shk/app/policies",
"/home/alfredo/rails_apps/shk/app/uploaders",
"/home/alfredo/rails_apps/shk/app/controllers/concerns",
"/home/alfredo/rails_apps/shk/app/models/concerns",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/mailboxer-0.13.0/app/builders",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/mailboxer-0.13.0/app/mailers",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/mailboxer-0.13.0/app/models",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/mailboxer-0.13.0/app/uploaders",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/devise-3.4.1/app/controllers",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/devise-3.4.1/app/helpers",
"/home/alfredo/.rvm/gems/ruby-2.2.0@shk/gems/devise-3.4.1/app/mailers",
"/home/alfredo/rails_apps/shk/spec/mailers/previews"]