# arg 1:  the new package version
pre_install() {
#
#  do pre-install stuff here
#
/bin/true
}

# arg 1:  the new package version
post_install() {
#
#  do post-install stuff here
#
/bin/true
}

# arg 1:  the new package version
# arg 2:  the old package version
pre_upgrade() {
#
#  do pre-upgrade stuff here
#
/bin/true
}

# arg 1:  the new package version
# arg 2:  the old package version
post_upgrade() {
#
#  do post-upgrade stuff here
#
	echo "=============================================================="
	echo ""
	echo "UWAGA! Pakiet iptables został zmieniony! "
	echo "Dodano nowe opcje uruchamiania firewalla, zmieniono zachowanie"
	echo "opcji 'stop', dodano konfigurator przekierowań portów, dodano "
	echo "mozliwość uruchomienia maskarady dla wybranych adresów IP."
	echo ""
	echo "Więcej o wprowadzonych zmianach można przeczytać w pliku: "
	echo "/usr/share/iptables/firewall.txt "
	echo ""
	echo "=============================================================="
/bin/true
}

# arg 1:  the old package version
pre_remove() {
#
#  do pre-remove stuff here
#
/bin/true
}

# arg 1:  the old package version
post_remove() {
#
#  do post-remove stuff here
#
/bin/true
}

op=$1
shift
$op $*