generate command, rails command, rake command, console

rails:

rails -d mysql  test

create files for rails project, using mysql  

( default is sqlite)

generate:

script/generate  controller rabbit index 

create rabbit controller with index action,  rabbit test, rabbit helper  & index template in the rabbit view

rake:

rake db:migrate

create the table in the database based on the migration file

script/console:

-s:  Any modifications you make will be rolled back on exit