And even then, knowing that this won't work: mv *.jpeg *.jpg requires yet another mental model, that of a shell and globbing. I've been using UNIX/Linux fo

And even then, knowing that this won't work: mv *.jpeg *.jpg requires yet another mental model, that of a shell and globbing. I've been using UNIX/Linux for 20 years and that still trips me up - because I started in an OS with no shell.