post_install() {
    if [ -x usr/bin/xdg-icon-resource ]; then
	xdg-icon-resource forceupdate --theme hicolor 2> /dev/null
    fi
 echo ">> If you use an HTTPS connection to CUPS, the first time you access"
 echo ">> the interface it may take a very long time before the site comes up."
 echo ">> This is because the first request triggers the generation of the CUPS"
 echo ">> SSL certificates which can be a very time-consuming job."
}

post_upgrade() {
    if [ -x usr/bin/xdg-icon-resource ]; then
	xdg-icon-resource forceupdate --theme hicolor 2> /dev/null
    fi
}

post_remove() {
    if [ -x usr/bin/xdg-icon-resource ]; then
	xdg-icon-resource forceupdate --theme hicolor 2> /dev/null
    fi
}