printf "Service name '%s' is already being used by key '%s'.\nAre you sure you want to use it again? (y/N) " "$fingerprint" "$userID" >&2
read OK; OK=${OK:=N}
if [ "${OK/y/Y}" != 'Y' ] ; then
printf "Service name '%s' is already being used by key '%s'.\nAre you sure you want to use it again? (y/N) " "$fingerprint" "$userID" >&2
read OK; OK=${OK:=N}
if [ "${OK/y/Y}" != 'Y' ] ; then