Bash or python scripting of iperf for different ip addresses

Question

How can I achieve the following using python or bash?

iperf -s -B 234.5.6.7 -u -f m -i 1
- let the above command run for 5 seconds
- kill the above process (e.g. killall iperf)
iperf -s -B 234.5.6.8 -u -f m -i 1
- let the above command run for 5 seconds
- kill the above process (eg killall iperf)
and so on...

you have not given any information, or attempt. We are here to assist you. — Fallenreaper, Feb 08 '19 at 02:31
Please provide more information so that we can solve your problem — TheParam, Feb 08 '19 at 02:34

score 0 · Answer 1 · answered Feb 08 '19 at 02:37

$! in bash will give you the pid of the last background process. So you could do something quick and dirty like this in bash

#!/bin/bash 

iperf -s -B 234.5.6.7 -u -f m -I 1 &
FOO = $!
sleep 5
kill $FOO
iperf -s -B 234.5.6.8 -u -f m -I 1 &
FOO = $!
sleep 5
kill $FOO

Lather rinse repeat...

We can then refactor this to a for loop

#!/bin/bash

for IP in 234.5.6.7 234.5.6.8
do
  iperf -s -B $IP -u -f m -I 1 &
  FOO = $!
  sleep 5
  kill $FOO
done

1 Answers1