post_install() {
  if [ ! `grep subvein /etc/group` ]; then
    groupadd subvein &> /dev/null;
  fi

  chgrp -R subvein /opt/subvein/data
  echo "  >> Add yourself to the subvein group to run the game."
}

post_upgrade() {
  post_install 
}

pre_remove() {
  groupdel subvein &> /dev/null
}