#!/bin/bash
# **** License ****
# Version: VPL 1.0
#
# The contents of this file are subject to the Vyatta Public License
# Version 1.0 ("License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.vyatta.com/vpl
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Tom Grennan
# Date: 2007
#
# **** End License ****

shopt -s extglob
shopt -s nullglob

declare -a full_itfs=( /sys/class/net/+(eth|vmnet|lo|sit|wan)* )
declare -i rx_bytes rx_packets rx_errors rx_dropped rx_over_errors multicast
declare -i tx_bytes tx_packets tx_errors tx_dropped tx_carrier_errors collisions

printf '%10s    %10s %10s %10s %10s\n' \
    interface packets bytes errors drops

for itf in ${full_itfs[@]##*/} ; do
    for stat in \
	rx_bytes rx_packets rx_errors rx_dropped rx_over_errors multicast \
	tx_bytes tx_packets tx_errors tx_dropped tx_carrier_errors collisions
    do
	full_stat=/sys/class/net/${itf}/statistics/${stat}
	if  [ -r $full_stat ] ; then
	    eval $stat=$(cat $full_stat)
	else
	    eval $stat=0
	fi
    done
    printf '%10s rx %10d %10d %10d %10d\n' \
	$itf $rx_packets $rx_bytes $rx_errors $rx_dropped
    printf '%10s tx %10d %10d %10d %10d\n' \
	'' $tx_packets $tx_bytes $tx_errors $tx_dropped
done

# Local Variables:
# mode: shell-script
# sh-indentation: 4
# End: