Update the timestamp of a Bind DNS zonefile

bind-serial-update.sh

#!/bin/bash

if [ $# -ne 1 ]; then
	echo "missing parameter"
	exit 1
fi

ZONEFILE=$1

if ! [ -f $ZONEFILE ]; then
	echo "$ZONEFILE does not exist"
	exit 1
fi

echo updating $ZONEFILE
sed -i 's/[0-9]\{10\}.*serial$/'`date +%Y%m%d%H`' ; serial/g' $ZONEFILE