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Ok I saw that some topic were published in rosout a ROS_INFO.

Rosrecord is deprecated. Rosbag could help me. But as I see it generate binary files. I saw that it's format is published, perhaps I can read it. My idea is to read the message of topics in real time, like subscribing them, but I want to subscribe to more than one. Now, the better way to do it that I found is to redirect de desired topics with the rostopic echo. Also I can program a node that could subscribe to more than one node? I have to think which could be the better way.

Thank you