http://www.missiondata.com/blog/system-administration/17/17/
set -- `getopt -n$0 -u -a --longoptions="depth: adddays: topN:" "h" "$@"` || usage
[ $# -eq 0 ] && usage
while [ $# -gt 0 ]
do
case "$1" in
--depth) depth=$2;shift;;
--adddays) adddays=$2;shift;;
--topN) topN=$2;shift;;
-h) usage;;
--) shift;break;;
-*) usage;;
*) break;; #better be the crawl directory
esac
shift
done
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