All tutorials assume you have followed the instuctions from system startup
We will use the files located in “traj_setup/examples” and “trajectories/examples”. When you pass the names of these files to ROS in the
roslaunch command, you never need to use file extensions.
Unless specified, all commands in these tutorials assume you want to run a command using BOTH the arm and a hand. If you want to run on only one device, some commands have optional arguments to enable this (noted throughout the tutorial)