NameCheap Dynamic DNS Updater Script

readme.md

1. Enable Dynamic DNS for your domain. You'll get a "password" that you can use for their API Endpoint.
2. Replace variable values with your own.
3. Put the script in a safe place (I just used my home folder)
4. Set a cron job (or other recurring service) to run your script.
5. ???
6. Profit

dns_update.sh

#/bin/bash

Host_Name=host
Domain=example.com
Password="PASS_HASH_FROM_NAMECHEAP"
IP_Address=$(curl -s icanhazip.com)

url="https://dynamicdns.park-your-domain.com/update?host=$Host_Name&domain=$Domain&password=$Password"

result=$(curl -s --globoff $url)

NEW_IP=$(echo $result | sed -E 's/^.*IP>(.+)<\/IP.*$/\1/')
DONE=$(echo $result | sed -E 's/^.*Done>(.+)<\/Done.*$/\1/i')

echo "Request URL: $url"
if [[ $DONE == 'true' ]]; then
  echo "New IP: $NEW_IP"
else
  echo "Success: $DONE"
fi