01-ROS入门-06 ROS消息和服务

1.ROS消息

1.1新建ros消息

cd ~/workspace/src/package_name
mkdir msg
echo "int64 num" > msg/num.msg

2.ROS服务

2.1新建ros服务

cd ~/workspace/src/package_name
mkdir srv
roscp rospy_tutorials AddTwoInts.srv srv/sum.srv