def _show_table(self):
        td = TabularData(self.TABLE_COLUMNS, fill_value="-")
        conf = self.config.read()["machine"]
        if self.args.name:
            conf = {self.args.name: conf.get(self.args.name, {})}
        self._hide_private(conf)
        for machine, machine_config in conf.items():
            machine_config["name"] = machine
            td.row_from_dict(machine_config)
        td.dropna("cols", "all")
        td.render()