#!/bin/sh

if [ "$1" = "" ]; then 
	echo "pascha.diff targetfile"
	exit 1
fi

if [ ! -f "$1" ]; then
	echo "$1 not found"
	exit 1
fi
cp $1 $1.org
chmod u+w $1
echo 'G' | dd of=$1 ibs=1 obs=1 count=1 seek=7272 conv=notrunc
chmod u-w $1
echo "done!"
exit 0