ros常用命令：

1.环境变量刷新

source devel/setup.bash

2.ROS_INFO的信息在终端显示为乱码或者问号，则在main函数中加入：

setlocale(LC_ALL, "");

3.刷新bashrc文件

source ~/.bashrc

PX4

roslaunch px4 mavros_posix_sitl.launch

区分：make px4_sitl gazebo_iris 和 roslaunch px4 mavros_posix_sitl.launch区别

https://dgzc.ganahe.top/ganahe/2021/wrjzzdhogfzhjxds.html

https://www.jianshu.com/p/31c95d9a5f97