How to programm a way for Turtlesim

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Hi everybody,

Iḿ new in ROS and for exercise and learning i would like to programm a way for the Turtlesim.

I want the Turtle to go a small way like an "N" automatically. Therefor i guess i need a new Publisher node which sends the Way/Velocity data to the Subscriber of Turtlesim.

But i dont know how to do it. Does anyone have an idea how i should start or have some tips for me?

Thanks and cheers!