Stop/Kill specific daemon

def stop_process(parser_args):
    """ Stop/Kill specific daemon"""
    from synergy.system import process_helper

    try:
        pid = process_helper.get_process_pid(parser_args.process_name)
        if pid is None or process_helper.poll_process(parser_args.process_name) is False:
            message = 'ERROR: Process {0} is already terminated {1}\n'.format(parser_args.process_name, pid)
            sys.stderr.write(message)
            sys.exit(1)

        process_helper.kill_process(parser_args.process_name)
    except Exception as e:
        sys.stderr.write('Exception on killing {0} : {1}\n'.format(parser_args.process_name, e))
        traceback.print_exc(file=sys.stderr)