Asterisk zombie killing

asterisk_zombie_kill.sh

#!/bin/sh
###########################################################################
#
#       clean-up Asterisk zombies
#       file asterisk_zombie_kill.sh
#       Description: clean_up all parent dead Asterisk AGI processes, v 1.0 2006/05/10 bb Exp $
#       
#       cron task */30 * * * * root /usr/local/sbin/clean_up.sh
#
###########################################################################


LOG=/var/log/asterisk/cleanUP.log
date=`date`
t1=`cat /proc/stat | grep btime | awk '{print $2}'`
t3=`date +%s`

echo "$date New Clean UP "  >> $LOG

  for parent in `ps -ef | grep safe_asterisk | awk '$3 == '1'{print $2}'`
  do
  for ppid in ` ps -ef | awk '$3 == '${parent}' { print $2 }' `
  do
  for i in ` ps -ef | awk '$3 == '${ppid}' { print $2 }' `
  do

  t2=`cat /proc/$i/stat| awk '{print $22}'`
  b=$(($t3-$t1));
  c=$(($t2/100));
  d=$((($b-$c)/60));

  if [ $d -gt 30 ] ; then
    kill -9 $i
    echo "$date killing $i" >> $LOG
  fi

done
done
done