#!/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/'
}

if [[ "$@" -ne "" ]]
then
	interfaces=$(ip -4 -o a | grep "$@")
else
	interfaces=$(ip -4 -o a)
fi
ip=$(echo "$interfaces" | \
		 sed 's/^[0-9]*: \([^ ]*\)    inet \([0-9.]*\).*/\1:\2/g' | \
		 grep -v lo | \
		 tr '\n' ' ')

echo -n "<txt>${ip}$(doPing 8.8.8.8 G)</txt>"