PPS Viewer Script (Packets Per Second)

The script every second displays the number of incoming and outgoing packets per second on the specified network interface.
Place the contents of the script into a file, for example, pps.sh and execute by specifying the name of the network interface (you can stop the execution of the script with CTRL+C):

./pps.sh ens2f0

Script content:

#!/bin/bash
if [ -z "$1" ]; then
        echo usage: $0 [network-interface]
        echo shows packets-per-second
        exit
fi
  
IF=$1
  
while true
do
        RX1=`cat /sys/class/net/$1/statistics/rx_packets`
        TX1=`cat /sys/class/net/$1/statistics/tx_packets`
        sleep 1
        RX2=`cat /sys/class/net/$1/statistics/rx_packets`
        TX2=`cat /sys/class/net/$1/statistics/tx_packets`
        TXPPS=`expr $TX2 - $TX1`
        RXPPS=`expr $RX2 - $RX1`
        echo "TX $1: $TXPPS pkts/s RX $1: $RXPPS pkts/s"
done