O Guia Definitivo do Yii 1.1

public function run($args) { ... }
where $args refers to the extra parameters given in the command line.
Within a console command, we can use Yii::app() to access the console application
instance, through which we can also access resources such as database connections (e.g.
Yii::app()->db). As we can tell, the usage is very similar to what we can do in a Web
application.
Info: Starting from version 1.1.1, we can also create global commands that are shared
by all Yii applications on the same machine. To do so, define an environment variable
named YII_CONSOLE_COMMANDS which should point to an existing directory. We
can then put our global command class files under this directory.
Console Command Action
Note: The feature of console command action has been available since version 1.1.5.
A console command often needs to handle different command line parameters, some
required, some optional. A console command may also need to provide several subcommands
to handle different sub-tasks. These work can be simplified using console
command actions.
A console command action is a method in a console command class. The method name
must be of the format action Xyz, where Xyz refers to the action name with the first letter in
upper-case. For example, a method actionIndex defines an action named index.
To execute a specific action, we use the following console command format:
yiic --option1=value --option2=value2 ...
The additional option-value pairs will be passed as named parameters to the action
method. The value of a xyz option will be passed as the $xyz parameter of the action
method. For example, if we define the following command class:
class SitemapCommand extends CConsoleCommand
{
public function actionIndex($type, $limit=5) { ... }
public function actionInit() { ... }
}
Then, the following console commands will all result in calling actionIndex('News', 5):