parser.add_option("", "--list", dest="list", action="store_true",
help="List all nodes in the given nodegroup")
parser.add_option("", "--add", dest="add", action="store_true",
help="Add nodes to the given nodegroup")
parser.add_option("", "--delete", dest="delete", action="store_true",
help="Delete nodes from the given nodegroup")
parser.add_option("", "--list", dest="list", action="store_true",
help="List all nodes in the given nodegroup")
parser.add_option("", "--add", dest="add", action="store_true",
help="Add nodes to the given nodegroup")
parser.add_option("", "--delete", dest="delete", action="store_true",
help="Delete nodes from the given nodegroup")