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#!/bin/sh
memtotal=$(cat /proc/meminfo | grep MemTotal | awk '{print $2}')
memfree=$(cat /proc/meminfo | grep MemFree | awk '{print $2}')
membuff=$(cat /proc/meminfo | grep Buffers | awk '{print $2}')
memcache=$(cat /proc/meminfo | grep -v Swap | grep Cache | awk '{print $2}')
memused=$(expr 100 \* \( $memtotal - $memfree - $membuff - $memcache \) / $memtotal)
membuffcache=$( expr 100 \* \( $membuff + $memcache \) / $memtotal)
echo "$memused"
echo "$membuffcache"