One more fun thing in this vein: edit-and-execute-command is a readline binding commonly / by default bound to ^X^E (at least in "emacs mode"). It takes whate

One more fun thing in this vein: edit-and-execute-command is a readline binding commonly / by default bound to ^X^E (at least in "emacs mode"). It takes whatever command you're working on at the shell prompt and opens it with your $EDITOR (or $VISUAL if you have that defined separately for some reason). When you save and quit your editor, the shell runs the edited command.