.  devel/setup.bash
cd src
rostopic pub -1 human1/diff_drive_controller/cmd_vel geometry_msgs/Twist -- "[0,0,0]" "[0,0,-1]"
rostopic pub -1 human1/diff_drive_controller/cmd_vel geometry_msgs/Twist -- "[1,0,0]" "[0,0,0]"
rostopic pub -1 human1/diff_drive_controller/cmd_vel geometry_msgs/Twist -- "[1,0,0]" "[0,0,0]"
