dns-o-matic client for asuswrt

ddns-start

 #!/bin/sh

# Typical location - /jffs/scripts/ddns-start
# NOTE - USERNAME and PASSWORD must be URL encoded, example @ becomes %40
USERNAME=CHANGE_ME_URL_ENCODED 
PASSWORD=CHANGE_ME_URL_ENCODED
HOSTNAME=all.dnsomatic.com
IP=`curl --silent http://canhazip.com`
# Should be no need to modify anything beyond this point
/usr/sbin/curl --silent "https://$USERNAME:$PASSWORD@updates.dnsomatic.com/nic/update?hostname=$HOSTNAME&wildcard=NOCHG&mx=NOCHG&backmx=NOCHG&myip=$IP" > /dev/null                                     
if [ $? -eq 0 ]; then
  /sbin/ddns_custom_updated 1
else
  /sbin/ddns_custom_updated 0
fi

Variation on a DDNS script found on asuswrt-merlin

The original didn't specify the IP address to be used by the DNS provider. This version leverages canhazip service to retrieve the real IP address.

Remarks:

• don't forget to make the script executable (chmod u+x /jffs/scripts/ddns-start)
• remove the > /dev/null on line 10 and run the script manually. You should have a good answer if the credentials were properly provided, then put back the > /dev/null
• vim+scp kicks ass - vim scp://my_router_ip_address//jffs/scripts/ddns-start