+ sort fwlist-previous | uniq > fwlist-previous.sorted
+ sort fwlist-${KVNAME} | uniq > fwlist-${KVNAME}.sorted
+ diff -up -N fwlist-previous.sorted fwlist-${KVNAME}.sorted > fwlist.diff
+ rm fwlist.diff fwlist-previous.sorted fwlist-${KVNAME}.sorted