When starting the host controller module to use the -v or -h command line switches (which are supported in the code) there will be no result. The reason for this is, that the host-controller reads the authKey before it parses the command line for the manual invok. Also it looks like the redirected input/output leads to the case that no usage() can be writte anyway.

org.jboss.as.process.protocol.StreamUtils.readFully(StreamUtils.java:124)
org.jboss.as.host.controller.Main.main(Main.java:82)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.jboss.modules.Module.run(Module.java:260)
org.jboss.modules.Main.main(Main.java:291)