def main(args):
'''generic command entry point'''
name = os.path.basename(args[0])
if name.startswith("@"):
name = name[1:]
if name not in COMMANDS:
finish(Result.not_found("command %s not found" % name))
cls = COMMANDS[name]
params = cls.parse_args(args[1:])
result = cls.invoke(dict(name=name, args=params, vars=os.environ))
finish(result)
