if [ ${#1} -eq 0 ]; then
        release="stable"
else
        release=$1
fi

tmp=`tempfile`
echo -e "/\\*\\*\\*/{\nN\ns/$release/FOUND/\n}" > $tmp

echo "Packages not from $release or not the current ones from $release:"

for i in `dpkg --get-selections|grep -v deinstall|grep install | sed s/install//g | xargs printf "%s\n"`; do
        apt-cache policy $i | sed -f $tmp -|grep -q FOUND -
        if [ "$?" -eq 1 ]; then
                echo $i
        fi
done