#!/bin/bash

if hash drill 2>/dev/null; then
    drill myip.opendns.com @resolver1.opendns.com | grep "^myip." | cut -f5
elif hash dig 2>/dev/null; then
    dig +short myip.opendns.com @resolver1.opendns.com
elif hash curl 2>/dev/null; then
    curl -s ifconfig.me/ip
fi