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dayvonjersen/dyndns.sh

Created September 27, 2016 18:16
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dyndns.sh
#!/bin/bash
#
# Simple DynDNS Update for afraid.org
# Updated Wed Oct 8 08:00:35 2014
# Updated Tue 21 Jul 2015 06:15:31 AM EDT
# - Uses Bash now!
CURRENT_IP=$(dig +short myip.opendns.com @resolver1.opendns.com)
LAST_IP=$(cat /var/spool/cron/current_ip)
if [ "$CURRENT_IP" = "" ]; then
echo 'Connection down!';
elif [ "$CURRENT_IP" != "$LAST_IP" ]; then
echo "$CURRENT_IP" > /var/spool/cron/current_ip
curl http://freedns.afraid.org/dynamic/update.php? # ...
fi
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