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rospack find roscpp
rosls roscpp
lecture3
catkin
mkdir -p ~/catkin ws/src
cd ~/catkin_ws/src
catkin_init_workspace
catkin_create_pkg beginner_tutorials std_msgs rospy roscpp(this makes two files package.xml and CMakeLists.txt)
rospack find beginner_tutorials
gedit package.xml
gedit CMakeLists.txt(it contains many functions)
cd ~/catkin_ws
catkin_make _DMAKE_BUILD_TYPE=Release
lecture 5
Node->publish-message(having head as topic)->subscribe-Node
roscore
rosnode list(info about the node)
rosnode info /rosout
rosrun turtlesim
rosrun turtlesim_node __name:=my_turtle
rosnode ping /my_turtle
rostopic help
rostopic list
rosrun turtlesim teleop_key
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