use to get interface statistics by zabbix_agent

interface_statistics.conf

UserParameter=intstat[*],/etc/zabbix/scripts/intstat.sh $1 $2

interface_statistics.sh

#!/bin/bash
USERNAME=`whoami`
INTERFACE=$1
PARAM=$2


interfaces="bond0 eth0 eth1 eth2"
statuses='collisions     rx_errors  rx_packets     tx_errors
          multicast      rx_fifo_errors  tx_aborted_errors  tx_fifo_errors
          rx_bytes       rx_frame_errors  tx_bytes     tx_heartbeat_errors
          rx_compressed  rx_length_errors  tx_carrier_errors  tx_packets
          rx_crc_errors  rx_missed_errors  tx_compressed     tx_window_errors
          rx_dropped     rx_over_errors  tx_dropped '

function isCorrectInterface (){
  for interface in ${interfaces}
  do
    [ $1 = ${interface} ] && return 0;
  done
  exit 1;
}

function isCorrectStatus (){
   for status in ${statuses}
   do
     [ $1 = ${status} ] && return 0;
   done
   # echo "Parameter is not Match statuses."
   exit 1 ;
}

$(isCorrectInterface "${INTERFACE}")
if [ $? -eq 1  ]; then
   exit -1
fi
$(isCorrectStatus "${PARAM}")
if [ $? -eq 1  ]; then
   exit -1
fi

cat /sys/class/net/${INTERFACE}/statistics/${PARAM}