There was just now a problem where the root cause was between the keyboard and chair and I found I needed to kill a long running process – moving lots of files from their current Group to another.
During that emergency I found no keys or combinations to kill the “move”. I use Activity Monitor to kill the app. Then I copied my backup from earlier in the day and started again.
Is there a way to kill or otherwise interrupt an unwanted long-running activity, even if (erroneously) launched by the user?