ip-update.sh

#!/bin/sh
#
# Update A-records on each domain hosted at enom.com.
# Updated by Daniel Powell on 2017-02-24
# 2017-02-24 - Turns out according to https://gist.github.com/agarzon/2431219, we can combine HostName+Zone into Zone, and omitting Address assumes the IP performing the HTTP call.
#            - Functionize this script! It's totally awesome now.
#
# Make a GET call to http://dynamic.name-services.com/interface.asp
# All known params according to https://www.enom.com/download/updateip.cpp:
#  Command=SetDNSHost -- I don't know if this is the only option. Would be great if one could set cnames, mx records, redirects, text records from this too...
#  HostName=www -- Set subdomain including '@', '*', etc.
#  Zone=domain.com -- This is the domain used to login to access.enom.com. Can omit the HostName parameter and include the subdomain here instead (e.g. 'www.domain.com').
#  DomainPassword=passwd -- This is the password used to login to access.enom.com.
#  Address=127.0.0.1 -- Can enter any IPv4 address. If omitted, it uses the IP making the HTTP call.

setEnom() {
Command="SetDNSHost"

        if [ -z "$1" ]
        then
                echo "Need valid zone."
                return 1
        fi

        if [ -z "$2" ]
        then
                echo "Need valid domain password."
                return 1
        fi

        curl http://dynamic.name-services.com/interface.asp?Command=$Command\&Zone=$1\&DomainPassword=$2
}

setEnom "@.domain.com" "domainPasswd"
setEnom "www.domain.com" "domainPasswd"
setEnom "sub.domain.com" "domainPasswd"