#!/bin/bash

# Prints out the CPU load percentage

PREFIX=' '

get_load()
{
   echo "$PREFIX$( printf "%.0f" $(awk '{u=$2+$4; t=$2+$4+$5; if (NR==1){u1=u; t1=t;} else print ($2+$4-u1) * 100 / (t-t1); }' <(grep 'cpu ' /proc/stat) <(sleep 1;grep 'cpu ' /proc/stat)) )%"
}

get_load