Problem Installing Gazebo from debian

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Hi All,

Forgive me if this is a very simple beginners mistake, I am likely just missing something obvious.

After having installed ROS and been through the tutorials, my next task is to get the PR2 simulator up and running so that I can start playing with simulated robots to learn more about ROS.

I have found the Gazebo tutorial here: http://www.ros.org/wiki/simulator_gaz...

But am running into a problem with the following command: ~$ rosdep install gazebo_worlds

Warning: could not identify ['gazebo_worlds'] as a package

So I tried installing teh Gazebo stack (in case it was missing) and this is what I get: ~$ sudo apt-get install ros-diamondback-simulator_gazebo

Reading package lists... Done Building dependency tree
Reading state information... Done E: Unable to locate package ros-diamondback-simulator_gazebo

I am running Ubuntu 10.10, have checked my PATH (it is set as per the ROS tutorials) and am still left scratching my head.

Your help is appreciated.