Installation
Mac OS X
http://gazebosim.org/tutorials?tut=install_on_mac&cat=install
$ brew tap osrf/simulation $ brew install gazebo7 # ~?h build
Introspection
$ gz topic -l $ gz topic -e /gazebo/default/world_stats
Ubuntu
http://gazebosim.org/tutorials?tut=install_ubuntu&cat=install
$ aptitude install gazebo7 libgazebo7-dev