1.查看参数列表 rosparam list 2.查询参数rosparam get parameter_name,如rosparam get /rosdistro 3.设置参数rosparam set parameter_name parameter_value 4.运行turtlesim_node节点,再查看参数列表rosparam list,我们看到 /background_b /background_g /background_r 三个参数,将/background_b 设置成255我们没…