#!/bin/sh -m


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


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

    #shellcheck disable=SC2086
    ip="$(timeout 2 ${cmd} 2>/dev/null)"

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

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