app=`echo $i | awk -F. '{ print $2 }'`
[ ! -z $app ] && app=".$app"
-rm -rf video$app
+if [ "$1" = "renew" ]; then
+ rm -rf video$app
+fi
+
+if [ -d video$app ]; then
+ echo "skipping $app ... (use $0 renew to force rebuild)"
+ continue
+fi
+
mkdir -p video$app
sicnt=`grep 'ions per' $i | awk '{ print $5 }'`