第1次:tx2上安装ros参考:Ubuntu16.04安装ROS kinetic
https://blog.youkuaiyun.com/softimite_zifeng/article/details/78632211
第2次 参考:Install Robot Operating System (ROS) on NVIDIA Jetson TX2
https://www.youtube.com/watch?v=O4w3MYvhv2s
按照第二个教程不成功!
https://blog.youkuaiyun.com/u013453604/article/details/49386953
https://blog.youkuaiyun.com/yeluohanchan/article/details/75578268