I am completely new to ROS and am just trying to get up and running.

I am on a Mac computer running a VirtualBox VM with Ubuntu 16.04.

I followed the instructions to install ROS and everything went fine.

Then, I moved on to the Tutorial, and everything went fine until I tried to create a new workspace.

When I ran the command rosws init ~/fuerte_workspace /opt/ros/fuerte I got the error message

Using ROS_ROOT: /opt/ros/fuerte

ERROR in config: Is not a local file, nor a valid URL [/opt/ros/fuerte] : unknown url type: /opt/ros/fuerte

I just checked the folder /opt/ros/ and the only folder in it is kinetic. There is no fuerte folder in /opt/ros/.

What can I do to solve this issue?