Bash script to kill any firefox instance that runs for more than 10 minutes [runs every 1 minute]

kill_stuck_firefox.sh

# Notice: to run it, create a cronjob with the line below
# */1 * * * * root sh /path/to/file/kill_stuck_firefox.sh

#!/bin/bash
# This script will kill process which running more than 10 minutes
# egrep: the selected process; grep: hours
PIDS="`ps eaxo etime,pid,comm | egrep "firefox" | grep " [1-5][0-9]:" | awk '{print $2}'`"

# Kill the process
echo "Killing firefox processes running more than 10 minutes..."
for i in ${PIDS}; do { echo "Killing $i"; sudo kill -9 $i; }; done;