Crontab kill firefox processes

Question

I want to make a crontab job for killing any firefox processes running, if there is more than a max number of processes running, starting with the oldest process.

So let's say 5 processes is running and I only wan't to allow a maximum of 2, then kill the 3 oldest automatically.

Answer 1

Here goes bash script:

#!/bin/bash

let COUNT=$(pgrep firefox | wc -l)
for (( i=1; i<=$COUNT-2; i++ ))
do
  PID=$(pgrep -o firefox)
  pkill $PID
# sleep 3
done