Wake on LAN, then ping until the host is up

wake-host.sh

#!/bin/sh
HOST=hostname
MAC=12:34:56:78:90:AB

wakeonlan $MAC

# Wait until the host is pingable
count=0
while [ $count -lt 300 ]; do
	let count++
	if ping -q -c 1 $HOST > /dev/null; then
		echo
		exit 0
	fi
	echo -n .
	if [ $(( $count % 80 )) -eq 0 ]; then
		echo
	fi
done
echo
echo "Host '$HOST' does not seem to have come up? Giving up."
exit 1