if ! ( which lockfile-create >/dev/null 2>/dev/null ) ; then
if ! ( which lockfile >/dev/null ); then
failure "Neither lockfile-create nor lockfile are in the path!"
if ! ( which lockfile-create >/dev/null 2>/dev/null ) ; then
if ! ( which lockfile >/dev/null ); then
failure "Neither lockfile-create nor lockfile are in the path!"