speedtest.sh

#!/bin/bash
##Author Gautham
##Date 02122021

TESTFILE='https://speed.hetzner.de/100MB.bin'
LOCATION='/tmp/speedtestfile'
TESTTIME='5'
EXEC_TIME='40'
TH=$((SECONDS+${EXEC_TIME}))
## checking for network interface 
if [ -z "$1" ]; then
        echo
	echo usage: $0 network-interface
	echo
	echo e.g: bash $0 ETH01
	echo
	exit
fi

IF=$1

wget $TESTFILE -O $LOCATION &> /dev/null &
PID=$!
#echo
    while [ $SECONDS -lt $TH ]; do
	if [ -s "$LOCATION" ]; then
	    end=$((SECONDS+$TESTTIME))
	while [ $SECONDS -lt $end ];
		do
	
			R1=`cat /sys/class/net/$1/statistics/rx_bytes`
			T1=`cat /sys/class/net/$1/statistics/tx_bytes`
			sleep 1
       			R2=`cat /sys/class/net/$1/statistics/rx_bytes`
		        T2=`cat /sys/class/net/$1/statistics/tx_bytes`
		        TBPS=`expr $T2 - $T1`
		        RBPS=`expr $R2 - $R1`
		        TKBPS=`expr $TBPS / 1024`
		        RKBPS=`expr $RBPS / 1024`
		        echo "Uploaded $1: $TKBPS kB/s Downloaded $1: $RKBPS kB/s"
	done
	break;
	echo
	echo "Speed test completed"
	
	fi
   done
kill -9 $PID &> /dev/null
rm -f $LOCATION &> /dev/null