" clipboard sharing
set clipboard+=unnamed

$ rails generate controller tasks

$ rails destroy controller tasks

$ heroku create
Creating app... done, ⬢ heroku-appname-00000
https://heroku-appname-00000.herokuapp.com/ | https://git.heroku.com/heroku-appname-00000.git

$ heroku list
=== user@example.com Apps
heroku-appname-00000
heroku-appname-11111
heroku-appname-22222

$ heroku apps:destroy --app heroku-appname-00000 --confirm heroku-appname-00000
 ▸    WARNING: This will delete ⬢ heroku-appname-00000 including all add-ons.
 ▸    To proceed, type heroku-appname-00000 or re-run this command with --confirm
 ▸    heroku-appname-00000

> (ここに heroku-appname-00000 を入力)
Destroying ⬢ heroku-appname-00000 (including all add-ons)... done

$ heroku apps:destroy --app heroku-appname-00000 --confirm heroku-appname-00000
Destroying ⬢ heroku-appname-00000 (including all add-ons)... done

rails generate migration fix_typo

class ChangeColumnModelName < ActiveRecord::Migration[5.0]
  def change
	rename_column :modelname, :wrong, :correct
  end
end

rake db:migrate