Find out what Apache MaxClients should be set to

apachetest.sh

#!/bin/bash
echo "This is intended as a guideline only!"
if [ -e /etc/debian_version ]; then
    APACHE="apache2"
elif [ -e /etc/redhat-release ]; then
    APACHE="httpd"
fi
RSS=`ps -aylC $APACHE |grep "$APACHE" |awk '{print $8'} |sort -n |tail -n 1`
RSS=`expr $RSS / 1024`
echo "Stopping $APACHE to calculate free memory"
/etc/init.d/$APACHE stop &> /dev/null
MEM=`free -m |head -n 2 |tail -n 1 |awk '{free=($4); print free}'`
echo "Starting $APACHE again"
/etc/init.d/$APACHE start &> /dev/null
echo "MaxClients should be around" `expr $MEM / $RSS`