In Every Terminal (add this to bashrc, make sure path to repository is correct)
source $HOME/rrc_turtlebot_ws/devel/setup.bash
export TURTLEBOT3_MODEL=burger
export HOUSEMAP=$HOME/rrc_turtlebot_ws/src/turtlebot3/turtlebot3_navigation/maps/turtlebot3_house/map.yaml
Terminal 1
roscore
Terminal 2
roslaunch turtlebot3_gazebo turtlebot3_house.launch
Terminal 3
rosrun turtlebot3_gazebo move_boxes.py
Terminal 4
roslaunch turtlebot3_navigation turtlebot3_navigation.launch map_file:=$HOUSEMAP