Serial Number Modification

function modify_serial () {
	if ! SERIAL_NUMBER=$($VPD_BIN -f $FIRMWARE_FILE -g serial_number >> $LOGDIR/log.txt 2>&1)  ; then
		die "Unable to capture the Serial Number. Please review the log, then reseat the clip and try again"
	fi

	if ! SERIAL_NUMBER=$(cat /dev/urandom | tr -dc 'A-Z0-9' | fold -w ${#SERIAL_NUMBER} | head -n 1 >> $LOGDIR/log.txt 2>&1) ; then
		die "Unable to create new serial. Please review the log and try again."
	fi

	if ! $VPD_BIN -f $FIRMWARE_FILE -s serial_number=$SERIAL_NUMBER >> $LOGDIR/log.txt 2>&1 ; then
		die "Serial number failed to write to firmware file. Please review the log and try again."

	fi
}