Monitor and kill a process when it has been idle for 10 minutes (in this case, Oracle) - Written on mac, not tested on linux

processMonitor

#!/bin/bash

# The name of the process to search for and kill
PROCESSNAME="oracle";

# Determine if this script is currently running
if [ -f omstatus ]; then

	# The status file exists, wait a second and see if it changes
	CURRENTSTATUS=$(cat omstatus); sleep 2;
	NEWSTATUS=$(cat omstatus);

	if [ "$CURRENTSTATUS" ==  "$NEWSTATUS" ]; then
		RUNNING="0";
	else
		RUNNING="1";
		echo "$CURRENTSTATUS";
	fi
else
	RUNNING="0";
fi

# Only run the script if it's not already running
if [ "$RUNNING" == "0" ]; then

	echo "Starting process monitor";

	while true;
	do

		# Get programs's process ID
		PID=$(ps -A | grep -m1 "$PROCESSNAME" | awk '{print $1}');

		# Get process state
		STATE=$(top -l 1 -pid $PID -stats "state" | tail -1);

		# Get the time now
		NOW=$(date +%s);

		if [ "" != "$STATE" ]; then

			# If program is not sleeping, take note of the time
			if [ "$STATE" != "sleeping" ]; then
				echo "$NOW" >| time;
			fi 

			# Get the last time the process was not sleeping, which is saved in a file called "time"
			if [ -f time ]; then 
				TIME=$(cat time);
			else
				TIME=$(date +%s);
			fi

			# How long since last time process was not sleeping
			SINCE=$(expr "$NOW" - "$TIME");

			# If it's been sleeping for 10 minutes, kill it
			if [ $SINCE -gt 600 ]; then
				if [ -f time ]; then
					rm time;
				fi
				kill -9 $PID > /dev/null 2>&1;
			fi

			# Update status
			echo "$PROCESSNAME (PID: $PID) was $STATE for $SINCE seconds at $NOW" >| omstatus;

		else

			# Update status
			echo "$PROCESSNAME (PID: $PID) was not running at $NOW" >| omstatus;

		fi

	done &

fi