To shutdown the server via command line
sh ./bin/jboss-cli.sh --connect command=:shutdown assuming you are running on localhost and using the default native management port i.e. 9999
if not you need to specify the IP (jboss.bind.address) and the native management port(jboss.management.native.port) configured in standalone.xml
sh ./bin/jboss-cli.sh --connect controller=<IP>:<native-mgmt-port> command=:shutdown