#!/bin/bash

#  Script: getnetwork.sh
#  Syntax: getnetwork.sh InterfaceName
# Example: getnetwork.sh eth0
#  Output: InterfaceName,MACAddress,IPAddress,DNS1,DNS2,...
# Example: eth0,00:11:e3:f1:03:49,192.168.0.101,192.168.0.1,192.168.0.2

if [ $# -ne 1 ]; then
   echo "Syntax `basename $0` <interface>"
   exit 1
fi

IF="$1"
IP=`/sbin/ip -f inet addr show dev ${IF} | awk '/inet/ {print $2}' | cut -f1 -d/`
HW=`/sbin/ip link show ${IF} | awk '/ether/ {print $2}'`
DNS=`grep ^nameserver /etc/resolv.conf | awk '{print $2}' | xargs echo | tr ' ' ','`

echo "${IF},${HW},${IP},${DNS}"