Hi Wallace, I am using Amazon's VM, fedora 18. Jboss application server is just another service in fedora.
To check the jboss-as service status , use the command systemctl like this,
# systemctl status jboss-as
.
I have tested stopping the service then attempting starting the cli. It would not work.
To start the service, run the command systemctl like this,
# systemctl start jboss-as
.