#!/bin/bash

AVG_OPTION=$1
NUMBER_CORES=$(cat /proc/cpuinfo | grep processor | wc -l)

FILE_LOADAVG=$(cat /proc/loadavg)
IFS=' ' read -a loadavg <<< "${FILE_LOADAVG}"

AVG_OPTION_KEY=0
case "$AVG_OPTION" in
5)  AVG_OPTION_KEY=1
    ;;
15)  AVG_OPTION_KEY=2
    ;;
esac

AVGLOAD=${loadavg[$AVG_OPTION_KEY]}

LOAD=$(echo "scale=6; $AVGLOAD * (1/$NUMBER_CORES)" | bc)
echo $LOAD