Ros commands

Messages

Look at all messages available

rosmsg list

Look at the definition of a single message type

rosmsg show message_type

For example

rosmsg show turtlesim/pose

Topics

Look at all topics being published

rostopic list

Get information about a topic (who subscribes, who published, whats the message type?)

rostopic info topic_name

Print all the messages from one topic

rostopic echo topic_name

Running nodes

Running a single node

rosrun package_name node_name.py

Running a launch file

roslaunch package_name launch_file.launch