+#! /bin/sh
+
+if test $# != 2; then
+ cat <<EOF
+$0, to update version information a Debian changelog
+usage: $0 CHANGELOG VERSION
+
+This utility checks whether CHANGELOG, which should be a Debian changelog
+file, contains a record for VERSION. If not, then it adds one at the top.
+EOF
+ exit 1
+fi
+
+CHANGELOG=$1
+VERSION=$2
+if test ! -e "$CHANGELOG"; then
+ echo "$0: $CHANGELOG does not exist (use --help for help"
+ exit 1
+fi
+
+if grep '($(VERSION))' debian/changelog >/dev/null 2>&1; then
+ :
+else
+ echo "Adding change log record for $VERSION to $CHANGELOG"
+ {
+ cat <<EOF
+openvswitch ($VERSION) unstable; urgency=low
+
+ * New upstream version.
+
+ -- Open vSwitch team <dev@openvswitch.org> `date -u +"%a, %d %b %Y %H:%M:%S +0000"`
+
+EOF
+ cat "$CHANGELOG"
+ } > "$CHANGELOG".new
+ mv "$CHANGELOG".new "$CHANGELOG"
+fi