1 运行消息发布
$ roscore
$ cd ~/catkin_ws
$ source ./devel/setup.bash
$ rosrun beginner_tutorials talker (C++)
$ rosrun beginner_tutorials talker.py (Python)
2 运行消息订阅
$ rosrun beginner_tutorials listener (C++)
$ rosrun beginner_tutorials listener.py (Python)
最后使用Ctrl-C
来结束终端运行。