Connection Arduino with ROS

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Hey Folks,

I have a problem in the connection between arduino and ROS, I am using Ubuntu 15, 64 bit, Jade version ROS.

The problem in these two following commands commands

roscd rosserial_arduino/src cp -r ros_lib <sketchbook>/libraries/ros_lib

It gives the following error

bash: /libraries/ros_lib: No such file or directory

Although I have tried to download the source code from Github and putting in the sketchbook of Arduino Linux environment, but no connection.

Another concern between Catkin and Rosbuild, I have read difference between them, but uptill now I can't figure out if the problem lies in selecting the proper for building executive files. Any recommendation!

Have a Great Day!

Best, Marwa ELDiwiny