script to update namecheap dynamic dns

namecheap_dynamic_dns_updater.sh

#!/usr/bin/env bash

# script to update the dynamic dns address of a namecheap domain
# usage: ./updater.sh <host> <domain> <password>

if [ "$#" -ne 3 ]; then
    echo "Illegal number of parameters"
    echo "usage: ${0} <host> <domain> <password>"
    exit -1
fi

HOST=$1
DOMAIN=$2
PASSWORD=$3
public_ip=$(curl -s ipinfo.io/ip)

echo "Will now set ${host}.${domain} to IP ${public_ip}"
url="https://dynamicdns.park-your-domain.com/update?host=${HOST}&domain=${DOMAIN}&password=${PASSWORD}&ip=${public_ip}"

echo "Calling URL..."
result=$(curl -s $url)
echo "response: ${result}"