#!/bin/bash
#
# http://www.labradordata.ca/home/40
# Revised 02-Feb-2007: include kernel memory (kmemsize) in 'used' calculation
# and show percentages in output.
# 
BEAN=`cat /proc/user_beancounters`
GUAR=`echo "$BEAN" | grep vmguar | awk '{ print $4;}'`
PRIV=`echo "$BEAN" | grep privvm | awk '{ print $2;}'`
KMEM=`echo "$BEAN" | grep kmem | awk '{ print $3;}'`
let TOTL=$GUAR/256
let KMMB=$KMEM/1048576
let PVMB=$PRIV/256
let USED=$KMMB+$PVMB
let FREE=$TOTL-$USED
if [ "$FREE" -gt "0" ]; then
  let UPER=$USED*100/$TOTL
  let FPER=100-$UPER
else
  let UPER="100"
  let FPER="0"
fi
echo "VPS Memory:"
echo "  Total: $TOTL mb  Used: $USED mb (${UPER}%)  Free: $FREE mb (${FPER}%)"