[quote="arunava_nag, post:3, topic:2640"] Is it going to be like ros2 ropic pub /test_topic std_msgs/msgs/String "hello there"?? [/quote] Please see `ros2 topic pub --help` for an example. [quote="arunava_nag, post:4, topic:2640"] Also, I realized when I run my executable like ros2 run testpackage test_node and then do ros2 node list. It shows me the right name. However, when I exit my program (Ctrl+C) I still happen to find my ros2 node if I do a ros2 node list. [/quote] For me it works for the `demo_nodes_cpp` / `demo_nodes_py` `talker` and `listener` using FastRTPS on Ubuntu using Beta 3. Maybe you can provide more information what environment / version / nodes you are experiencing it with. --- [Visit Topic](https://discourse.ros.org/t/cannot-run-executable-and-lib-using-ros2-run-after-building-using-ament/2640/5) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: