post_install() {
  echo -n "Adding gopher system group... "
  groupadd -g 41 gopher && echo "done."

  echo -n "Adding gopher system user... "
  useradd -g 41 -u 41 -d /var/gopher \
    -s /bin/false gopher && echo "done."
  passwd -l gopher &> /dev/null

  post_upgrade $1
}

post_upgrade() {
  echo -n "Refreshing directory caches... "
  mkcache -r &> /dev/null && echo "done."
}

post_remove() {
  echo -n  "Removing gopher system user... "
  userdel gopher  &> /dev/null && echo "done."
  echo -n "Removing gopher system group... "
  groupdel gopher &> /dev/null && echo "done."
}

op=$1
shift
$op $*