parser.add_option("--wait-children", dest="wait_children",
action="store_true", help="Wait for child processes")
parser.add_option("--no-wait-children", dest="wait_children",
parser.add_option("--wait-children", dest="wait_children",
action="store_true", help="Wait for child processes")
parser.add_option("--no-wait-children", dest="wait_children",