Usage:

rails COMMAND [options]

You must specify a command:

new          Create a new Rails application. "rails new my_app" creates a
             new application called MyApp in "./my_app"
plugin new   Create a new Rails railtie or engine

All commands can be run with -h (or –help) for more information.

Inside a Rails application directory, some common commands are:

console      Start the Rails console
server       Start the Rails server
test         Run tests except system tests