killall gzserver and killall gzclient
#robot_description roslaunch project robot_rviz.launch -- open model in rviz
#robot_gazebo roslaunch project robot_gazebo.launch -- open model in world gazebo
#control robot rosrun teleop_twist_keyboard teleop_twist_keyboard.py
#robot_slam
(open new terminal) roslaunch project robot_slam.launch
(open new terminal) rosrun teleop_twist_keyboard teleop_twist_keyboard.py
(open new terminal) rosrun map_server map_saver -f ~/map
#robot_navigation roslaunch project robot_gazebo.launch
(open new terminal) roslaunch project robot_navigation.launch or roslaunch project robot_navigation.launch dwa_local_planner:=true
#astar roslaunch project astar.launch x_pos:=4.0 y_pos:=3.0 yaw:=3.142 1->0.6->3.0->2.0->4.0->3.0->3.142->-4.0->-3.0
#avoid object roslaunch project robot_gazebo.launch (open new terminal) rosrun project obstacle_avoidance.py