rails--rails/railties/lib/rails/commands/help/USAGE

The most common rails commands are:
 generate    Generate new code (short-cut alias: "g")
 console     Start the Rails console (short-cut alias: "c")
 server      Start the Rails server (short-cut alias: "s")
 test        Run tests (short-cut alias: "t")
 dbconsole   Start a console for the database specified in config/database.yml
             (short-cut alias: "db")
<% unless engine? %>
 new         Create a new Rails application. "rails new my_app" creates a
             new application called MyApp in "./my_app"
<% end %>

All commands can be run with -h (or --help) for more information.
In addition to those commands, there are: