#!/bin/bash

if [ -z "$1" ]; then
	echo -e "Usage: ${0##*/} iface"
	exit
fi
iface=$1

IFS="$IFS:"
while read -a line ; do
	if [ "${line[0]}" = "${iface}" ]; then
		echo -e "${line[1]}\n${line[9]}"
		found=yes
	fi
done </proc/net/dev

if [ -z "${found}" ]; then
	echo "Device ${iface} not found."
	exit 1
fi