roslaunch a plugin and an executable

edit

Hi !

I would like to use only one command to launch a rqt plugin (an interface interacting with an executable, I would like to open rqt in fact), the executable, a ros serial command and roscore.I supposed that I must use roslaunch and create a launch file but I don't find anything explaining how launching that type of things. The tutorial only talks about nodes. How can I launch rqt ? how can I launch the command line ? I have already looked on this and this. Is there any help somewhere ?

Thank you !