echo "Are you sure you want to add the above key as a"
read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
if [ "${OK/y/Y}" != 'Y' ] ; then
echo "Are you sure you want to add the above key as a"
read -p "certifier of users on this system? (y/N) " OK; OK=${OK:-N}
if [ "${OK/y/Y}" != 'Y' ] ; then