http://wiki.ros.org/kinetic/Installation
$ nano ~/.bashrc
# Add the following lines to .bashrc (Replace ***CLIENT_IP*** and ***SERVER_IP***)
export MY_IP=***CLIENT_IP***
export ROS_MASTER_URI=http://***SERVER_IP***:11311
export ROS_HOSTNAME="$MY_IP"
export ROS_IP="$MY_IP"
$ roscd dropboxros/jonathan_folder
$ rosrun dropboxros ClientGUI.py$ nano ~/.bashrc
# Add the following lines to .bashrc (Replace ***CLIENT_IP*** and ***SERVER_IP***)
export MY_IP=***CLIENT_IP***
export ROS_MASTER_URI=http://***SERVER_IP***:11311
export ROS_HOSTNAME="$MY_IP"
export ROS_IP="$MY_IP"
$ roscd dropboxros/taylor_folder
$ rosrun dropboxros ClientGUI.py$ nano ~/.bashrc
# Add the following lines to .bashrc (Replace ***SERVER_IP***)
export MY_IP=***SERVER_IP***
export ROS_MASTER_URI=http://***SERVER_IP***:11311
export ROS_HOSTNAME="$MY_IP"
export ROS_IP="$MY_IP"
$ roscd dropboxros/server_folder
$ sh ../src/start_server.sh