diff --git a/tools/gnu-du-backup-size-compare.sh b/tools/gnu-du-backup-size-compare.sh
new file mode 100755
index 0000000..ea8b833
--- /dev/null
+++ b/tools/gnu-du-backup-size-compare.sh
@@ -0,0 +1,31 @@
+#!/bin/sh
+#
+# Nico Schottelius <nico-ccollect //@// schottelius.org>
+# Date: 2007-08-16
+# Last Modified: -
+#
+
+exit 1
+# not yet finished.
+
+CCOLLECT_CONF=${CCOLLECT_CONF:-/etc/ccollect}
+CCOLLECT_SOURCES="$CCOLLECT_CONF/defaults/sources"
+
+me="$(basename "$0")"
+
+if [ $# -lt 1 ]; then
+   echo "${me}: sources names
+   exit 1
+fi
+
+if [ ! -d "$CCOLLECT_SOURCES" ]; then
+   echo "No sources defined in $CCOLLECT_SOURCES"
+   exit 1
+fi
+
+cd "$CCOLLECT_INTERVALS"
+
+for interval in *; do
+   eval int_$interval=$(cat $interval);
+   eval echo $interval: \$int_$interval;
+done