post_install() {
  gtk-update-icon-cache -q -t -f /usr/share/icons/hicolor > /dev/null 2>&1
  update-desktop-database > /dev/null 2>&1
}

post_upgrade() {
  post_install $1
}

pre_remove() {
  update-desktop-database > /dev/null 2>&1
}

post_remove() {
  gtk-update-icon-cache -q -t -f /usr/share/icons/hicolor > /dev/null 2>&1     
  update-desktop-database > /dev/null 2>&1
}