On Fri, Nov 26, 2010 at 3:01 AM, Felix Ingrand wrote: > Sorry to ask such a stupid question, but I wanted to play with smach and run the smach_tutorials... but cannot locate it anywhere. hi Felix, If you're using Ubuntu, you can get smach by installing executive_smach, the stack in which the smach package resides: sudo apt-get install ros-cturtle-executive-smach Documentation is in the wiki: http://www.ros.org/wiki/smach brian.