I have installed turtlebot on my robot and also on the desktop. I am using the software on a 4XXX roomba. The baud rate is the same as the turtlebot. But, the port is not the same. I have tried and tried to edit the turtlebot_node.py configuration file and it will not let me save it. It says I don't have permissions.
When I try to change the permissions, it tells me that I am not the owner so i cannot change the permission. This happens on both the netbook AND the desktop. I am loss to what to do next. chmod and chown do not seem to work.