how to stop the real robot after launching send goals in rtabmap

[Masoumeh]

hi

I have launched rtabmap, and in another terminal i have launched a python file containing specified goal.
now it might happen sometimes that there is a problem and i want to stop the vehicle by command line to not to move anymore further, do you know how can i do that?

Thanks

[matlabbe]

You may look at this : http://wiki.ros.org/twist_mux