Clone ROS-Package
Change in your ROS-node directory:
cd ~/catkin_ws/src
Clone the git-repository of the talker-node
git clone https://git.informatik.fh-nuernberg.de/werthmannlu/ros_talker.git
Run Ros-Node
Build Packages with catkin
cd ~/catkin_ws
catkin_make
Source the created Packages
source ~/catkin_ws/devel/setup.sh
Check if the Package is installed
rospack find ros_talker
Start Ros Kernel (optional)
roscore &
Start the Talker Node
rosrun ros_talker talker.py