killerapp

#!/bin/bash

while true
do
    COMMAND=`ps -Aco pid,pcpu,time,comm | sort -nrk2 | head -1`
    PID=`echo $COMMAND | awk '{print $1}'`
    PCPU=`echo $COMMAND | awk '{print $2}'`
    PCPU=${PCPU%%.*}
    PTIME=`echo $COMMAND | awk '{print $3}'`
    PTIME=${PTIME%%:*}
    PCMD=`echo $COMMAND | awk '{print $4}'`

    MAXUSE=80
	MAXHOURS=1

	if [ $PCPU -ge $MAXUSE ] && [ $PTIME -ge $MAXHOURS ];
	then
	    sleep 20

        NEWCOMMAND=`ps -Aco pid,pcpu,time,comm | sort -nrk2 | head -10 | grep $PID`
		NEWPCPU=`echo $NEWCOMMAND | awk '{print $2}'`
		NEWPCPU=${NEWPCPU%%.*}
		NEWTIME=`echo $NEWCOMMAND | awk '{print $3}'`
		NEWTIME=${NEWTIME%%:*}

		if [ $NEWPCPU -ge $MAXUSE ] && [ $NEWTIME -ge $MAXHOURS ];
		then
		    kill -15 $PID
		    sleep 20

		    if [ `ps -Aco pid,pcpu | sort -nrk2 | head -10 | grep -c $PID` == 1 ];
            then
                kill -9 $PID
                echo `date`" - SIGKILLed $PCMD with PID $PID at $NEWPCPU CPU usage and $NEWTIME CPU time... na holleri!" >> killerlog.txt
            else
    		    echo `date`" - SIGTERMinated $PCMD with PID $PID at $NEWPCPU CPU usage and $NEWTIME CPU time" >> killerlog.txt
            fi
		fi
	fi

	sleep 60
done