Description of problem:

# subscription-manager --help | grep subscription-manager
Usage: subscription-manager [options] MODULENAME --help

                            ^^^^^^^^^
Besides "--help", what options are available to subscription-manager? none
I suggest changing the subscription-manager usage statement to this:
Usage: subscription-manager MODULENAME [MODULE-OPTIONS] [--help]


Version-Release number of selected component (if applicable):
[root@jsefler-r63-server ~]# rpm -q subscription-manager
subscription-manager-0.99.8-1.git.13.1ecb596.el6.x86_64





Additional info:
[root@jsefler-r63-server ~]# subscription-manager --help


Usage: subscription-manager [options] MODULENAME --help


Primary Modules:

	list           List subscription and product information for this machine
	refresh        Pull the latest subscription data from the server
	register       register the client to RHN
	subscribe      Subscribe the registered machine to a specified product
	unregister     unregister the client from RHN
	unsubscribe    Unsubscribe the machine from all or specific subscriptions

Other Modules (Please consult documentation):

	clean          Remove all local consumer and subscription data without affecting the server
	config         List, set, or remove the configuration parameters in use by this machine.
	environments   Display the environments available for a user
	facts          Work with the current facts for this machine
	identity       Display the identity certificate for this machine or request a new one
	import         Import certificates which were provided outside of the tool
	orgs           Display the orgs against which a user can register a system
	redeem         Attempt to redeem a subscription for a preconfigured machine
	repos          List the repos which this machine is entitled to use
	service-levels Display the service levels available for an organization.