#!/bin/bash

function doPing () {
	# $1 = target
	# $2 = letter
	ping -c1 -W1 "$1" | \
		(grep "bytes from" || echo "<span fgcolor=\"red\">$2:Down</span>") | \
		sed 's/.*time=\([0-9\.]*\).*/'"$2"':\1ms/'
}

function get_ip_addresses() {
    ip -4 -json address | jq -r --arg ifregex "${1:-lo}" '
map(select(.ifname | test($ifregex) | not) |
    .ifname + ":" + (.addr_info | map(.local) | join(","))) |
    join(" ")
'
}

echo -n "<txt>$(get_ip_addresses "$1") $(doPing 8.8.8.8 G)</txt>"