rails command line

• rails console
• rails server
• rake
• rails generate
• rails dbconsole
• rails new app_name

$ rails console --sandbox $ rails destroy model Oops $ rake about You can precompile the assets in app/assets using rake assets:precompile and remove those compiled assets using rake assets:clean. rake routes rails foo Creates a new Rails applications in subdirectory foo. rake db:migrate Runs all migrations to bring the database up to date. rake db:migrate:reset Drops the database, creates a new one, and runs all migrations to bring the database up to date. rake db:migrate VERSION=20090909201633_create_photos.rb Runs migrations (either forward or backward) to restore the database to match the state just after the given migration. gem update Updates all Ruby Gems. gem update rails--include-dependencies Updates Rails to the latest version, including all Gems that Rails depends upon. gem update --system Updates Ruby to the latest version. bundle exec gem uninstall GEM_NAME ---------using bundle undle clean(1) Cleans up unused gems in your bundler directory bundle show(1) Show the source location of a particular gem in the bundle bundle install(1) Install the gems specified by the Gemfile or Gemfile.lock bundle update(1) Update dependencies to their latest versions