#!/bin/bash 
# report memory usage
free -m
echo
echo -n "Total free is "
free -m | gawk '/buffers\/cache/ {free = $4};/^Mem:/{tot=$2};END {print free," out of ",tot," = ",free/tot*100,"%"};'
echo -n "Adding up all process memory usage in percent: "
echo `ps aux|gawk '{sum +=$4};END {print sum}'`
