This will list out all the VMs

    $ VBoxManage list vms
    "virtualbox_default_1418633437021_83822" {0342b0ad-d64c-4864-a0e2-c16235dc6ff2}
    "serverr" {eca868d2-6d5d-4b49-b076-27f5ef396355}
    "sensu_client" {70b38f62-0a0c-4965-b4f4-5360ec761d64}
    "analytics" {ab9e59e4-7058-4c9f-80af-c403348cac6f}
    "sensu-server_default_1424653555631_75219" {4d7174f7-6f7b-4732-98c3-9509c426cae3}
    "simple-sensu-client_default_1424660131045_1714" {1eb59ae6-2d5e-4b0f-9135-a7de6c882e1d}