If the script crashes (or if you stop it for some reason) and you try running it again, it will complain that the file /etc/ros/rosdep/sources.list.d/20-default.list already exists and exit. We should have the script delete that file if it exists so that this doesn't happen.
If the script crashes (or if you stop it for some reason) and you try running it again, it will complain that the file
/etc/ros/rosdep/sources.list.d/20-default.listalready exists and exit. We should have the script delete that file if it exists so that this doesn't happen.