O Guia Definitivo do Yii 1.1

yiic sitemap index --type=News --limit=5
// $limit takes default value
yiic sitemap index --type=News
// $limit takes default value
// because 'index' is a default action, we can omit the action name
yiic sitemap --type=News
// the order of options does not matter
yiic sitemap index --limit=5 --type=News
If an option is given without value (e.g. --type instead of --type=News), the corresponding
action parameter value will be assumed to be boolean true.
Note: The feature of console command action has been available since version 1.1.5.
A parameter can take an array value by declaring it with array type hinting:
public function actionIndex(array $types) { ... }
To supply the array value, we simply repeat the same option in the command line as
needed:
yiic sitemap index --types=News --types=Article
The above command will call actionIndex(array('News', 'Article')) ultimately.
Starting from version 1.1.6, Yii also supports using anonymous action parameters and
global options.
Anonymous parameters refer to those command line parameters not in the format of
options. For example, in a command yiic sitemap index --limit=5 News, we have an
anonymous parameter whose value isNews while the named parameter limit is taking the
value 5.
To use anonymous parameters, a command action must declare a parameter named as
$args. For example,
public function actionIndex($limit=10, $args=array()) {...}
The $args array will hold all available anonymous parameter values.