#!/bin/sh

[ ! -f /var/lock/subsys/apt ] && exit 0

[ -f /etc/sysconfig/apt ] && . /etc/sysconfig/apt

[ $CHECK_ONLY == "yes" ] && OPTS="$OPTS --check-only"
[ $PRESERVE_CONFIG == "yes" ] && OPTS="$OPTS -o rpm::preserve-config=true"
OPTS="$OPTS $EXTRA_OPTIONS"

if /usr/bin/apt-get -qq update; then
    /usr/bin/apt-get dist-upgrade -qq --check-only
    if [ $? -eq 100 ]; then
        /usr/bin/apt-get -q -y $OPTS dist-upgrade
    fi
fi