Given that the GUI is open, and the important nature of the upgrade process, one does not except a single ctrl-C - which I executed because, in the terminal, apt appeared to have hung - to terminate the whole upgrade process, without any confirmation (even, though, happily, I was merely in the 'simulation' phase of the upgrade).
Given that the GUI is open, and the important nature of the upgrade process, one does not except a single ctrl-C - which I executed because, in the terminal, apt appeared to have hung - to terminate the whole upgrade process, without any confirmation (even, though, happily, I was merely in the 'simulation' phase of the upgrade).
Screenshot:
EDITED for clarity.