So obvious! But _no_ I haven't done this even though I have messed up remote servers where this would have helped. A bit embarrassed I didn't think of it myself, but thanks for the tip nonetheless!
I also did not think of it myself, but had it shown to me by a greybeard after complaining about having messed up in exactly that way, and had to pay extortionate prices for "hands on" by someone at our colo facility...
