#!/bin/sh
grep -l -r '[[:space:]]\+$' * | while read fn; do
echo -n "Processing: $fn ..."
sed 's/[[:space:]]\+$//' < "$fn" > "$fn.tmp"
if cmp -s "$fn" "$fn.tmp"; then
echo " unchanged"
rm "$fn.tmp"
else
echo " changed"
mv "$fn.tmp" "$fn"
fi
done