webs

https://docs.ros.org/

https://fishros.com/d2lros2/

hello-world

ROS2 INSTALL

source /opt/ros/rolling/setup.zsh

Example 1:

ros2 run demo_nodes_py listener

ros2 run demo_nodes_cpp talker

Example 2:

ros2 run turtlesim turtlesim_node

ros2 run turtlesim turtle_teleop_key

rqt

some questions

1. https://raw.githubusercontent.com ping不通。

sudo sed -i 's/^#DNS=/DNS=8.8.8.8 1.1.1.1/' /etc/systemd/resolved.conf
sudo systemctl restart systemd-resolved
echo "185.199.108.133 raw.githubusercontent.com" | sudo tee -a /etc/hosts
curl -v https://raw.githubusercontent.com