#!/bin/sh


TAB="$(printf -- '\t')"
readonly TAB


execute_and_format_result() {
    cmd="${@}"

    ip="$(${cmd} 2>/dev/null)"

    printf "%s\t%s\n" "${ip}" "${cmd}"
}

if [ "${1}" = '--short' ]; then
    curl ip.thek4n.ru
    exit "${?}"
fi

{
    execute_and_format_result curl ipinfo.io/ip
    execute_and_format_result curl https://ip.thek4n.ru/
    execute_and_format_result dig +short myip.opendns.com @resolver1.opendns.com
} | column -t -s "${TAB}"