安装ROS2过程
添加ros2 软件源
sudo sh -c ‘echo “deb [arch=amd64] http://packages.ros.org/ros2/ubuntu bionic main” > /etc/apt/sources.list.d/ros2-latest.list’

sudo apt install curl gnupg2 lsb-release
curl http://repo.ros2.org/repos.key | sudo apt-key add -
sudo sh -c 'echo "deb [arch=arm64] https://mirrors.tuna.tsinghua.edu.cn/ros2/ubuntu/  bionic main" > /etc/apt/sources.list.d/ros2-latest.list'sudo apt update
sudo apt install ros-eloquent-desktop
sudo apt inst