--user Talk to the service manager of the calling user, rather than the service manager of the system. --system Talk to the service manager of the system. This is the implied default. -H --host= Execute the operation remotely. Specify a hostname, or username and hostname separated by @, to connect to. This will use SSH to talk to the remote machine manager instance. -M --machine= Execute operation on a local container. Specify a container name to connect to.