post_install() {
  /usr/sbin/groupadd -g 21 locate &>/dev/null
  chown -R root:locate /var/lib/mlocate
  echo "mlocate command is technically locate."
  echo "You should run updatedb as root."
}

pre_remove() {
  /usr/sbin/groupdel locate &>/dev/null
}

op=$1
shift
$op $*