Sorry for my amateur question.

I'd love to try out some simple robot control demos of ROS.

So, I went to http://www.ros.org/wiki/AllTutorials and tried pr2_simulator,

but it seems the tutorials here are too old and 

I failed to find pr2_2dnav_gazebo (but pr2_2dnav found),

and pr2-simple-fake_localization.launch doesn't existing at all.

So, can anybody please show me 

where to find a runnable robot navigation or robot control demo of ROS,

including the source code, 

so that I may be able to revise the source according to my own control requirement?

Thanks in advance.

Best Regards

JIA

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