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I at moment trying to learn about ROS using the guide provided by this page. Up until now it has been running fine, but for some reason i am not getting the same output as i was supposed to here

http://wiki.ros.org/ROS/Tutorials/CreatingMsgAndSrv#Using_rosmsg

The output i receive is this

Unable to load msg [beginner_tutorials/Num]: Cannot locate message [Num]: unknown package [beginner_tutorials] on search path [{'rosconsole': ['/opt/ros/indigo/share/rosconsole/msg'], 'catkin': ['/opt/ros/indigo/share/catkin/msg'], 'angles': ['/opt/ros/indigo/share/angles/msg'], 'image_view': ['/opt/ros/indigo/share/image_view/msg'], 'carrot_planner': ['/opt/ros/indigo/share/carrot_planner/msg'], 'urdf': ['/opt/ros/indigo/share/urdf/msg'], 'rosgraph': ['/opt/ros/indigo/share/rosgraph/msg'], 'rqt_py_console': ['/opt/ros/indigo/share/rqt_py_console/msg'], 'nodelet_topic_tools': ['/opt/ros/indigo/share/nodelet_topic_tools/msg'], 'rqt_graph': ['/opt/ros/indigo/share/rqt_graph/msg'], 'rotate_recovery': ['/opt/ros/indigo/share/rotate_recovery/msg'], 'theora_image_transport': ['/opt/ros/indigo/share/theora_image_transport/msg'], 'rocon_python_comms': ['/opt/ros/indigo/share/rocon_python_comms/msg'], 'qt_gui': ['/opt/ros/indigo/share/qt_gui/msg'], 'filters': ['/opt/ros/indigo/share/filters/msg'], 'ecl_exceptions': ['/opt/ros/indigo/share/ecl_exceptions/msg'], 'navfn': ['/opt/ros/indigo/share/navfn/msg'], 'dwa_local_planner': ['/opt/ros/indigo/share/dwa_local_planner/msg'], 'rosgraph_msgs': ['/opt/ros/indigo/share/rosgraph_msgs/msg'], 'smclib': ['/opt/ros/indigo/share/smclib/msg'], 'ecl_devices': ['/opt/ros/indigo/share/ecl_devices/msg'], 'rocon_gateway_utils': ['/opt/ros/indigo/share/rocon_gateway_utils/msg'], 'roscpp_serialization': ['/opt/ros/indigo/share/roscpp_serialization/msg'], 'rqt_rviz': ['/opt/ros/indigo/share/rqt_rviz/msg'], 'rosbuild': ['/opt/ros/indigo/share/rosbuild/msg'], 'qt_gui_cpp': ['/opt/ros/indigo/share/qt_gui_cpp/msg'], 'rosauth': ['/opt/ros/indigo/share/rosauth/msg'], 'tf': ['/opt/ros/indigo/share/tf/msg'], 'rqt_publisher': ['/opt/ros/indigo/share/rqt_publisher/msg'], 'roslang': ['/opt/ros/indigo/share/roslang/msg'], 'geometric_shapes': ['/opt/ros/indigo/share/geometric_shapes/msg'], 'kobuki_driver': ['/opt/ros/indigo/share/kobuki_driver/msg'], 'smach_ros': ['/opt/ros/indigo/share/smach_ros/msg'], 'genlisp': ['/opt/ros/indigo/share/genlisp/msg'], 'map_server': ['/opt/ros/indigo/share/map_server/msg'], 'interactive_markers': ['/opt/ros/indigo/share/interactive_markers/msg'], 'dynamic_reconfigure': ['/opt/ros/indigo/share/dynamic_reconfigure/msg'], 'ecl_containers': ['/opt/ros/indigo/share/ecl_containers/msg'], 'diagnostic_aggregator': ['/opt/ros/indigo/share/diagnostic_aggregator/msg'], 'ecl_license': ['/opt/ros/indigo/share/ecl_license/msg'], 'smart_battery_msgs': ['/opt/ros/indigo/share/smart_battery_msgs/msg'], 'robot_state_publisher': ['/opt/ros/indigo/share/robot_state_publisher/msg'], 'visualization_msgs': ['/opt/ros/indigo/share/visualization_msgs/msg'], 'diagnostic_updater': ['/opt/ros/indigo/share/diagnostic_updater/msg'], 'ecl_streams': ['/opt/ros/indigo/share/ecl_streams/msg'], 'resource_retriever': ['/opt/ros/indigo/share/resource_retriever/msg'], 'rqt_topic': ['/opt/ros/indigo/share/rqt_topic/msg'], 'smach': ['/opt/ros/indigo/share/smach/msg'], 'ecl_mpl': ['/opt/ros/indigo/share/ecl_mpl/msg'], 'stdr_parser': ['/opt/ros/indigo/share/stdr_parser/msg'], 'ecl_math': ['/opt/ros/indigo/share/ecl_math/msg'], 'rqt_action': ['/opt/ros/indigo/share/rqt_action/msg'], 'rqt_top': ['/opt/ros/indigo/share/rqt_top/msg'], 'rosbridge_server': ['/opt/ros/indigo/share/rosbridge_server/msg'], 'diagnostic_msgs': ['/opt/ros/indigo/share/diagnostic_msgs/msg'], 'move_base': ['/opt/ros/indigo/share/move_base/msg'], 'rosboost_cfg': ['/opt/ros/indigo/share/rosboost_cfg/msg'], 'genmsg': ['/opt/ros/indigo/share/genmsg/msg'], 'xacro': ['/opt/ros/indigo/share/xacro/msg'], 'turtle_tf2': ['/opt/ros/indigo/share/turtle_tf2/msg'], 'rqt_robot_dashboard': ['/opt/ros/indigo/share/rqt_robot_dashboard/msg'], 'pluginlib': ['/opt/ros/indigo/share/pluginlib/msg'], 'xmlrpcpp': ['/opt/ros/indigo/share/xmlrpcpp/msg'], 'rqt_service_caller': ['/opt/ros/indigo/share/rqt_service_caller/msg'], 'ar_track_alvar': ['/opt/ros/indigo/share/ar_track_alvar/msg'], 'rqt_msg': ['/opt/ros/indigo/share/rqt_msg/msg'], 'geometry_msgs': ['/opt/ros/indigo/share/geometry_msgs/msg'], 'rosmaster': ['/opt/ros/indigo/share/rosmaster/msg'], 'warehouse_ros': ['/opt/ros/indigo/share/warehouse_ros/msg'], 'yocs_velocity_smoother': ['/opt/ros/indigo/share/yocs_velocity_smoother/msg'], 'rosnode': ['/opt/ros/indigo/share/rosnode/msg'], 'rqt_pose_view': ['/opt/ros/indigo/share/rqt_pose_view/msg'], 'rocon_app_manager': ['/opt/ros/indigo/share/rocon_app_manager/msg'], 'bond': ['/opt/ros/indigo/share/bond/msg'], 'rocon_apps': ['/opt/ros/indigo/share/rocon_apps/msg'], 'image_geometry': ['/opt/ros/indigo/share/image_geometry/msg'], 'rocon_app_utilities': ['/opt/ros/indigo/share/rocon_app_utilities/msg'], 'rospack': ['/opt/ros/indigo/share/rospack/msg'], 'rocon_semantic_version': ['/opt/ros/indigo/share/rocon_semantic_version/msg'], 'actionlib_msgs': ['/opt/ros/indigo/share/actionlib_msgs/msg'], 'image_rotate': ['/opt/ros/indigo/share/image_rotate/msg'], 'rqt_image_view': ['/opt/ros/indigo/share/rqt_image_view/msg'], 'rgbd_launch': ['/opt/ros/indigo/share/rgbd_launch/msg'], 'yocs_msgs': ['/opt/ros/indigo/share/yocs_msgs/msg'], 'roslisp': ['/opt/ros/indigo/share/roslisp/msg'], 'rqt_console': ['/opt/ros/indigo/share/rqt_console/msg'], 'joint_state_publisher': ['/opt/ros/indigo/share/joint_state_publisher/msg'], 'rocon_std_msgs': ['/opt/ros/indigo/share/rocon_std_msgs/msg'], 'ecl_sigslots': ['/opt/ros/indigo/share/ecl_sigslots/msg'], 'rviz_plugin_tutorials': ['/opt/ros/indigo/share/rviz_plugin_tutorials/msg'], 'tf2_msgs': ['/opt/ros/indigo/share/tf2_msgs/msg'], 'python_qt_binding': ['/opt/ros/indigo/share/python_qt_binding/msg'], 'laser_geometry': ['/opt/ros/indigo/share/laser_geometry/msg'], 'clear_costmap_recovery': ['/opt/ros/indigo/share/clear_costmap_recovery/msg'], 'rviz': ['/opt/ros/indigo/share/rviz/msg'], 'rocon_master_info': ['/opt/ros/indigo/share/rocon_master_info/msg'], 'gencpp': ['/opt/ros/indigo/share/gencpp/msg'], 'rqt_gui_cpp': ['/opt/ros/indigo/share/rqt_gui_cpp/msg'], 'rqt_bag': ['/opt/ros/indigo/share/rqt_bag/msg'], 'rqt_gui': ['/opt/ros/indigo/share/rqt_gui/msg'], 'qt_gui_py_common': ['/opt/ros/indigo/share/qt_gui_py_common/msg'], 'eigen_conversions': ['/opt/ros/indigo/share/eigen_conversions/msg'], 'roscpp_traits': ['/opt/ros/indigo/share/roscpp_traits/msg'], 'driver_base': ['/opt/ros/indigo/share/driver_base/msg'], 'rosout': ['/opt/ros/indigo/share/rosout/msg'], 'diagnostic_common_diagnostics': ['/opt/ros/indigo/share/diagnostic_common_diagnostics/msg'], 'rostopic': ['/opt/ros/indigo/share/rostopic/msg'], 'rospy_tutorials': ['/opt/ros/indigo/share/rospy_tutorials/msg'], 'smach_msgs': ['/opt/ros/indigo/share/smach_msgs/msg'], 'message_generation': ['/opt/ros/indigo/share/message_generation/msg'], 'camera_calibration': ['/opt/ros/indigo/share/camera_calibration/msg'], 'kobuki_gazebo': ['/opt/ros/indigo/share/kobuki_gazebo/msg'], 'rocon_gateway': ['/opt/ros/indigo/share/rocon_gateway/msg'], 'polled_camera': ['/opt/ros/indigo/share/polled_camera/msg'], 'gazebo_plugins': ['/opt/ros/indigo/share/gazebo_plugins/msg'], 'gazebo_msgs': ['/opt/ros/indigo/share/gazebo_msgs/msg'], 'ecl_threads': ['/opt/ros/indigo/share/ecl_threads/msg'], 'rostime': ['/opt/ros/indigo/share/rostime/msg'], 'rqt_nav_view': ['/opt/ros/indigo/share/rqt_nav_view/msg'], 'turtlebot_navigation': ['/opt/ros/indigo/share/turtlebot_navigation/msg'], 'urdf_tutorial': ['/opt/ros/indigo/share/urdf_tutorial/msg'], 'kobuki_auto_docking': ['/opt/ros/indigo/share/kobuki_auto_docking/msg'], 'ecl_time_lite': ['/opt/ros/indigo/share/ecl_time_lite/msg'], 'rosservice': ['/opt/ros/indigo/share/rosservice/msg'], 'rospy': ['/opt/ros/indigo/share/rospy/msg'], 'kdl_conversions': ['/opt/ros/indigo/share/kdl_conversions/msg'], 'turtle_tf': ['/opt/ros/indigo/share/turtle_tf/msg'], 'roscpp_tutorials': ['/opt/ros/indigo/share/roscpp_tutorials/msg'], 'ecl_build': ['/opt/ros/indigo/share/ecl_build/msg'], 'roscpp': ['/opt/ros/indigo/share/roscpp/msg'], 'openni_launch': ['/opt/ros/indigo/share/openni_launch/msg'], 'turtle_actionlib': ['/opt/ros/indigo/share/turtle_actionlib/msg'], 'python_orocos_kdl': ['/opt/ros/indigo/share/python_orocos_kdl/msg'], 'stage': ['/opt/ros/indigo/share/stage/msg'], 'roslint': ['/opt/ros/indigo/share/roslint/msg'], 'depthimage_to_laserscan': ['/opt/ros/indigo/share/depthimage_to_laserscan/msg'], 'visualization_marker_tutorials': ['/opt/ros/indigo/share/visualization_marker_tutorials/msg'], 'bondcpp': ['/opt/ros/indigo/share/bondcpp/msg'], 'rosconsole_bridge': ['/opt/ros/indigo/share/rosconsole_bridge/msg'], 'pluginlib_tutorials': ['/opt/ros/indigo/share/pluginlib_tutorials/msg'], 'gateway_msgs': ['/opt/ros/indigo/share/gateway_msgs/msg'], 'camera_calibration_parsers': ['/opt/ros/indigo/share/camera_calibration_parsers/msg'], 'rocon_service_pair_msgs': ['/opt/ros/indigo/share/rocon_service_pair_msgs/msg'], 'roslz4': ['/opt/ros/indigo/share/roslz4/msg'], 'rqt_dep': ['/opt/ros/indigo/share/rqt_dep/msg'], 'ecl_converters': ['/opt/ros/indigo/share/ecl_converters/msg'], 'rocon_python_utils': ['/opt/ros/indigo/share/rocon_python_utils/msg'], 'rosmsg': ['/opt/ros/indigo/share/rosmsg/msg'], 'turtlebot_description': ['/opt/ros/indigo/share/turtlebot_description/msg'], 'actionlib_tutorials': ['/opt/ros/indigo/share/actionlib_tutorials/msg'], 'turtlesim': ['/opt/ros/indigo/share/turtlesim/msg'], 'amcl': ['/opt/ros/indigo/share/amcl/msg'], 'rocon_uri': ['/opt/ros/indigo/share/rocon_uri/msg'], 'rqt_robot_monitor': ['/opt/ros/indigo/share/rqt_robot_monitor/msg'], 'rocon_ebnf': ['/opt/ros/indigo/share/rocon_ebnf/msg'], 'self_test': ['/opt/ros/indigo/share/self_test/msg'], 'roslib': ['/opt/ros/indigo/share/roslib/msg'], 'diagnostic_analysis': ['/opt/ros/indigo/share/diagnostic_analysis/msg'], 'stereo_msgs': ['/opt/ros/indigo/share/stereo_msgs/msg'], 'kobuki_gazebo_plugins': ['/opt/ros/indigo/share/kobuki_gazebo_plugins/msg'], 'kobuki_capabilities': ['/opt/ros/indigo/share/kobuki_capabilities/msg'], 'pcl_msgs': ['/opt/ros/indigo/share/pcl_msgs/msg'], 'trajectory_msgs': ['/opt/ros/indigo/share/trajectory_msgs/msg'], 'create_driver': ['/opt/ros/indigo/share/create_driver/msg'], 'move_base_msgs': ['/opt/ros/indigo/share/move_base_msgs/msg'], 'capabilities': ['/opt/ros/indigo/share/capabilities/msg'], 'turtlebot_gazebo': ['/opt/ros/indigo/share/turtlebot_gazebo/msg'], 'laser_assembler': ['/opt/ros/indigo/share/laser_assembler/msg'], 'ecl_errors': ['/opt/ros/indigo/share/ecl_errors/msg'], 'pcl_conversions': ['/opt/ros/indigo/share/pcl_conversions/msg'], 'fake_localization': ['/opt/ros/indigo/share/fake_localization/msg'], 'rviz_python_tutorial': ['/opt/ros/indigo/share/rviz_python_tutorial/msg'], 'robot_pose_publisher': ['/opt/ros/indigo/share/robot_pose_publisher/msg'], 'tf2': ['/opt/ros/indigo/share/tf2/msg'], 'rqt_runtime_monitor': ['/opt/ros/indigo/share/rqt_runtime_monitor/msg'], 'ecl_eigen': ['/opt/ros/indigo/share/ecl_eigen/msg'], 'rosbash': ['/opt/ros/indigo/share/rosbash/msg'], 'rqt_reconfigure': ['/opt/ros/indigo/share/rqt_reconfigure/msg'], 'rqt_bag_plugins': ['/opt/ros/indigo/share/rqt_bag_plugins/msg'], 'bfl': ['/opt/ros/indigo/share/bfl/msg'], 'rqt_launch': ['/opt/ros/indigo/share/rqt_launch/msg'], 'rocon_python_redis': ['/opt/ros/indigo/share/rocon_python_redis/msg'], 'yocs_controllers': ['/opt/ros/indigo/share/yocs_controllers/msg'], 'rqt_plot': ['/opt/ros/indigo/share/rqt_plot/msg'], 'topic_tools': ['/opt/ros/indigo/share/topic_tools/msg'], 'rostest': ['/opt/ros/indigo/share/rostest/msg'], 'ecl_time': ['/opt/ros/indigo/share/ecl_time/msg'], 'tf_conversions': ['/opt/ros/indigo/share/tf_conversions/msg'], 'control_msgs': ['/opt/ros/indigo/share/control_msgs/msg'], 'cpp_common': ['/opt/ros/indigo/share/cpp_common/msg'], 'nodelet': ['/opt/ros/indigo/share/nodelet/msg'], 'nodelet_tutorial_math': ['/opt/ros/indigo/share/nodelet_tutorial_math/msg'], 'rqt_robot_steering': ['/opt/ros/indigo/share/rqt_robot_steering/msg'], 'kobuki_msgs': ['/opt/ros/indigo/share/kobuki_msgs/msg'], 'genpy': ['/opt/ros/indigo/share/genpy/msg'], 'tf2_geometry_msgs': ['/opt/ros/indigo/share/tf2_geometry_msgs/msg'], 'ar_track_alvar_msgs': ['/opt/ros/indigo/share/ar_track_alvar_msgs/msg'], 'compressed_image_transport': ['/opt/ros/indigo/share/compressed_image_transport/msg'], 'rqt_shell': ['/opt/ros/indigo/share/rqt_shell/msg'], 'zeroconf_msgs': ['/opt/ros/indigo/share/zeroconf_msgs/msg'], 'roscreate': ['/opt/ros/indigo/share/roscreate/msg'], 'image_transport': ['/opt/ros/indigo/share/image_transport/msg'], 'stdr_resources': ['/opt/ros/indigo/share/stdr_resources/msg'], 'ecl_mobile_robot': ['/opt/ros/indigo/share/ecl_mobile_robot/msg'], 'rocon_app_manager_msgs': ['/opt/ros/indigo/share/rocon_app_manager_msgs/msg'], 'rocon_python_wifi': ['/opt/ros/indigo/share/rocon_python_wifi/msg'], 'qt_dotgraph': ['/opt/ros/indigo/share/qt_dotgraph/msg'], 'stdr_gui': ['/opt/ros/indigo/share/stdr_gui/msg'], 'ecl_geometry': ['/opt/ros/indigo/share/ecl_geometry/msg'], 'cv_bridge': ['/opt/ros/indigo/share/cv_bridge/msg'], 'gazebo_ros': ['/opt/ros/indigo/share/gazebo_ros/msg'], 'rosbag_storage': ['/opt/ros/indigo/share/rosbag_storage/msg'], 'ecl_utilities': ['/opt/ros/indigo/share/ecl_utilities/msg'], 'rocon_hub': ['/opt/ros/indigo/share/rocon_hub/msg'], 'roswtf': ['/opt/ros/indigo/share/roswtf/msg'], 'std_srvs': ['/opt/ros/indigo/share/std_srvs/msg'], 'eigen_stl_containers': ['/opt/ros/indigo/share/eigen_stl_containers/msg'], 'rospy_message_converter': ['/opt/ros/indigo/share/rospy_message_converter/msg'], 'ecl_concepts': ['/opt/ros/indigo/share/ecl_concepts/msg'], 'global_planner': ['/opt/ros/indigo/share/global_planner/msg'], 'mk': ['/opt/ros/indigo/share/mk/msg'], 'octomap': ['/opt/ros/indigo/share/octomap/msg'], 'rocon_hub_client': ['/opt/ros/indigo/share/rocon_hub_client/msg'], 'stage_ros': ['/opt/ros/indigo/share/stage_ros/msg'], 'ecl_linear_algebra': ['/opt/ros/indigo/share/ecl_linear_algebra/msg'], 'stereo_image_proc': ['/opt/ros/indigo/share/stereo_image_proc/msg'], 'joy': ['/opt/ros/indigo/share/joy/msg'], 'bondpy': ['/opt/ros/indigo/share/bondpy/msg'], 'collada_urdf': ['/opt/ros/indigo/share/collada_urdf/msg'], 'stdr_robot': ['/opt/ros/indigo/share/stdr_robot/msg'], 'camera_info_manager': ['/opt/ros/indigo/share/camera_info_manager/msg'], 'kobuki_description': ['/opt/ros/indigo/share/kobuki_description/msg'], 'stdr_msgs': ['/opt/ros/indigo/share/stdr_msgs/msg'], 'rqt_web': ['/opt/ros/indigo/share/rqt_web/msg'], 'ecl_formatters': ['/opt/ros/indigo/share/ecl_formatters/msg'], 'class_loader': ['/opt/ros/indigo/share/class_loader/msg'], 'tf2_py': ['/opt/ros/indigo/share/tf2_py/msg'], 'shape_msgs': ['/opt/ros/indigo/share/shape_msgs/msg'], 'kobuki_ftdi': ['/opt/ros/indigo/share/kobuki_ftdi/msg'], 'cmake_modules': ['/opt/ros/indigo/share/cmake_modules/msg'], 'nav_core': ['/opt/ros/indigo/share/nav_core/msg'], 'uuid_msgs': ['/opt/ros/indigo/share/uuid_msgs/msg'], 'create_node': ['/opt/ros/indigo/share/create_node/msg'], 'move_slow_and_clear': ['/opt/ros/indigo/share/move_slow_and_clear/msg'], 'rocon_console': ['/opt/ros/indigo/share/rocon_console/msg'], 'robot_pose_ekf': ['/opt/ros/indigo/share/robot_pose_ekf/msg'], 'create_description': ['/opt/ros/indigo/share/create_description/msg'], 'nav_msgs': ['/opt/ros/indigo/share/nav_msgs/msg'], 'rosmake': ['/opt/ros/indigo/share/rosmake/msg'], 'image_proc': ['/opt/ros/indigo/share/image_proc/msg'], 'costmap_2d': ['/opt/ros/indigo/share/costmap_2d/msg'], 'ecl_type_traits': ['/opt/ros/indigo/share/ecl_type_traits/msg'], 'kobuki_dock_drive': ['/opt/ros/indigo/share/kobuki_dock_drive/msg'], 'zeroconf_avahi': ['/opt/ros/indigo/share/zeroconf_avahi/msg'], 'depth_image_proc': ['/opt/ros/indigo/share/depth_image_proc/msg'], 'actionlib': ['/opt/ros/indigo/share/actionlib/msg'], 'laser_filters': ['/opt/ros/indigo/share/laser_filters/msg'], 'kobuki_safety_controller': ['/opt/ros/indigo/share/kobuki_safety_controller/msg'], 'kobuki_node': ['/opt/ros/indigo/share/kobuki_node/msg'], 'rosparam': ['/opt/ros/indigo/share/rosparam/msg'], 'rosunit': ['/opt/ros/indigo/share/rosunit/msg'], 'rosclean': ['/opt/ros/indigo/share/rosclean/msg'], 'std_capabilities': ['/opt/ros/indigo/share/std_capabilities/msg'], 'tf2_ros': ['/opt/ros/indigo/share/tf2_ros/msg'], 'turtlebot_bringup': ['/opt/ros/indigo/share/turtlebot_bringup/msg'], 'librviz_tutorial': ['/opt/ros/indigo/share/librviz_tutorial/msg'], 'rqt_moveit': ['/opt/ros/indigo/share/rqt_moveit/msg'], 'pcl_ros': ['/opt/ros/indigo/share/pcl_ros/msg'], 'base_local_planner': ['/opt/ros/indigo/share/base_local_planner/msg'], 'interactive_marker_tutorials': ['/opt/ros/indigo/share/interactive_marker_tutorials/msg'], 'shape_tools': ['/opt/ros/indigo/share/shape_tools/msg'], 'message_runtime': ['/opt/ros/indigo/share/message_runtime/msg'], 'stdr_server': ['/opt/ros/indigo/share/stdr_server/msg'], 'rqt_py_common': ['/opt/ros/indigo/share/rqt_py_common/msg'], 'message_filters': ['/opt/ros/indigo/share/message_filters/msg'], 'std_msgs': ['/opt/ros/indigo/share/std_msgs/msg'], 'kobuki_bumper2pc': ['/opt/ros/indigo/share/kobuki_bumper2pc/msg'], 'gmapping': ['/opt/ros/indigo/share/gmapping/msg'], 'yocs_cmd_vel_mux': ['/opt/ros/indigo/share/yocs_cmd_vel_mux/msg'], 'rosbridge_library': ['/opt/ros/indigo/share/rosbridge_library/msg'], 'random_numbers': ['/opt/ros/indigo/share/random_numbers/msg'], 'rosapi': ['/opt/ros/indigo/share/rosapi/msg'], 'rqt_srv': ['/opt/ros/indigo/share/rqt_srv/msg'], 'rqt_gui_py': ['/opt/ros/indigo/share/rqt_gui_py/msg'], 'voxel_grid': ['/opt/ros/indigo/share/voxel_grid/msg'], 'map_msgs': ['/opt/ros/indigo/share/map_msgs/msg'], 'rocon_icons': ['/opt/ros/indigo/share/rocon_icons/msg'], 'roslaunch': ['/opt/ros/indigo/share/roslaunch/msg'], 'compressed_depth_image_transport': ['/opt/ros/indigo/share/compressed_depth_image_transport/msg'], 'rqt_tf_tree': ['/opt/ros/indigo/share/rqt_tf_tree/msg'], 'openni_camera': ['/opt/ros/indigo/share/openni_camera/msg'], 'collada_parser': ['/opt/ros/indigo/share/collada_parser/msg'], 'rqt_logger_level': ['/opt/ros/indigo/share/rqt_logger_level/msg'], 'kobuki_random_walker': ['/opt/ros/indigo/share/kobuki_random_walker/msg'], 'ecl_command_line': ['/opt/ros/indigo/share/ecl_command_line/msg'], 'openslam_gmapping': ['/opt/ros/indigo/share/openslam_gmapping/msg'], 'kdl_parser': ['/opt/ros/indigo/share/kdl_parser/msg'], 'rosbag_migration_rule': ['/opt/ros/indigo/share/rosbag_migration_rule/msg'], 'media_export': ['/opt/ros/indigo/share/media_export/msg'], 'laptop_battery_monitor': ['/opt/ros/indigo/share/laptop_battery_monitor/msg'], 'kobuki_keyop': ['/opt/ros/indigo/share/kobuki_keyop/msg'], 'urdf_parser_plugin': ['/opt/ros/indigo/share/urdf_parser_plugin/msg'], 'ecl_config': ['/opt/ros/indigo/share/ecl_config/msg'], 'sensor_msgs': ['/opt/ros/indigo/share/sensor_msgs/msg'], 'orocos_kdl': ['/opt/ros/indigo/share/orocos_kdl/msg'], 'rosbag': ['/opt/ros/indigo/share/rosbag/msg'], 'kobuki_rapps': ['/opt/ros/indigo/share/kobuki_rapps/msg'], 'unique_id': ['/opt/ros/indigo/share/unique_id/msg']}]

eventhough an ls shows that the file exist... ??? i am confused..


Originally posted by 215 on ROS Answers with karma: 156 on 2015-01-30

Post score: 1

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1 Answer 1

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It looks like the ROS tools can't find your beginner_tutorials package.

  • You should make sure that you've sourced the devel/setup.bash in your workspace
  • You should make sure that your package is named beginner_tutorials
  • You can check that ROS can find your package with rospack find beginner_tutorials

Originally posted by ahendrix with karma: 47576 on 2015-01-30

This answer was ACCEPTED on the original site

Post score: 2


Original comments

Comment by 215 on 2015-01-30:
It will not rospack find the package/directory eventhoug it inside of it. i tried source devel/setup.bash it just say that such file doesn't exist.

Comment by ahendrix on 2015-02-02:
Is your package in a catkin workspace? The devel folder should be in the top level of your workspace, and the setup.bash should be generated when you run catkin_make.

Comment by 215 on 2015-02-03:
workspace is made by using catkin_init_workspace, and catkin_make. I have been getting the right output from the previous sections of the tutorials... But this section doesn't seem to be correct..

Comment by 215 on 2015-02-03:
i don't know if it help but here is my workspace.. My workspace is given here.. https://www.dropbox.com/s/dud6uwhmmxf93cf/link.txt?dl=0

Comment by ahendrix on 2015-02-03:
You have two copies of the beginner_tutorials package in your workspace; one at the top level (wrong) and one inside the src folder (right). ROS cannot find any packages that exist outside of the src folder in your workspace.

Comment by 215 on 2015-02-03:
exactly... Problem fixed.

Comment by Kansai on 2021-04-01:
Please explain what was the cause of the problem in detail. Your dropbox is not available anymore

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