网络流量监控
#!/bin/bash
if [ -n “$1” ]; then
eth_name=$1
else
eth_name=“eth0”
fi
i=0
send_o=ifconfig $eth_name | grep bytes | awk '{print $6}' | awk -F : '{print $2}'
recv_o=ifconfig $eth_name | grep bytes | awk '{print $2}' | awk -F : '{print $2}'
send_n=$send_o
recv_n=$recv_o
while [ $i -le 100000 ]; do
send_l=$send_n
recv_l=$recv_n
sleep 1
send_n=ifconfig $eth_name | grep bytes | awk '{print $6}' | awk -F : '{print $2}'
recv_n=ifconfig $eth_name | grep bytes | awk '{print $2}' | awk -F : '{print $2}'
i=expr $i + 1
send_r=expr $send_n - $send_l
recv_r=expr $recv_n - $recv_l
total_r=expr $send_r + $recv_r
send_ra=expr \( $send_n - $send_o \) / $i
recv_ra=expr \( $recv_n - $recv_o \) / $i
total_ra=expr $send_ra + $recv_ra
sendn=ifconfig $eth_name | grep bytes | awk -F \( '{print $3}' | awk -F \) '{print $1}'
recvn=ifconfig $eth_name | grep bytes | awk -F \( '{print $2}' | awk -F \) '{print $1}'
clear
echo "Last second : Send rate: $send_r Bytes/sec Recv rate: $recv_r Bytes/sec Total rate: $total_r Bytes/sec"
echo "Average value: Send rate: $send_ra Bytes/sec Recv rate: $recv_ra Bytes/sec Total rate: $total_ra Bytes/sec"
echo "Total traffic after startup: Send traffic: $sendn Recv traffic: $recvn"done