this script can guess if an update is needed for a intel packages

the script compares intel specific packages that are found in this
feed in two different UGW version

ugw-differ.sh

+#!/bin/sh
+
+help() {
+cat <<END
+Run this script from intel feed directory
+Extract the UGW SDK and configure it for your initial and target version
+Define and export the variables environments INITIAL_UGW and TARGET_UGW
+They need to point to the openwrt directory from the initial and target UGW
+example:
+export INITIAL_UGW=/home/xxx/devel/shelob/ugw-8.4.1.30/UGW-8.4.1.30-SW-CD/ugw_sw/openwrt
+export TARGET_UGW=/home/xxx/devel/shelob/UGW-8.4.1.50-SW-CD/ugw_sw/openwrt
+./ugw-differ.sh
+
+You still need however to check for uboot and kernel manually
+END
+}
+
+[ -z "$INITIAL_UGW" ] && help && exit
+[ -z "$TARGET_UGW" ]  && help && exit
+
+echo "INITIAL_UGW=$INITIAL_UGW"
+echo "TARGET_UGW=$TARGET_UGW"
+echo
+
+need_update=""
+meld=""
+
+for d in *; do
+	[ ! -d $d ] && continue
+
+	initial=`find $INITIAL_UGW/package -name $d`
+	target=`find $TARGET_UGW/package -name $d`
+
+	echo "checking for update for the package $d"
+
+	if [ -z "$initial" ]; then
+		echo "package $d is not found in the intial ugw version"
+	fi
+
+	if [ -z "$target" ]; then
+		echo "package $d is not found in the target ugw version"
+	fi
+
+	if [ -z $initial ] || [ -z $target ]; then
+		continue
+	fi
+
+	diff=`diff -r $initial $target 2>&1`
+	if [ -n "$diff" ]; then
+		meld="${meld}meld $initial $target $d\n"
+		need_update="$need_update $d"
+	fi
+done
+
+echo
+echo "The following packages potentially need update:"
+echo "$need_update"
+
+echo
+echo "Printing meld commands: (may be you find them handy)"
+echo -e $meld