You want `sudo apt-get update` not `apt-cache`. In the future we ask that you please ask questions on http://answers.ros.org following our support guidelines: http://wiki.ros.org/Support ROS Discourse is for news and general interest discussions. [ROS Answers](http://answers.ros.org) provides a forum which can be filtered by tags to make sure the relevant people can find and/or answer the question, and not overload everyone with hundreds of posts. --- [Visit Topic](https://discourse.ros.org/t/new-packages-in-kinetic-2017-02-17/1348/3) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: