#!/bin/bash

i=1
j=1
threshold=850
while [ 2 -gt 1 ]; do
    echo "run count: $i"
    sleep 30
    mem=$(free -m | grep + | awk '{print $3}')
    echo "    used memory: $mem"
    echo "    threshold: $threshold"
    if [ $mem -gt $threshold ]; then
        echo "    memory usage too high"
        echo "    too high mem count: $j (apache will be restarted if count reaches 10)"
        let j++
        if [ $j -gt 10 ]; then
            echo "    resetting apache to clear memory"
            /etc/init.d/apache2 restart
            j=1
        fi
    else
        echo "    memory below threshold"
    fi
    let i++
done

exit 0