#!/bin/bash


# used mem
umem=$(free -m | grep buffers/cache | awk '{print $3}')
tmem=$(free -m | grep Mem: | awk '{print $2}')

percent=$((100*$(free -m | grep buffers/cache | awk '{print $3}')/$(free -m | grep Mem: | awk '{print $2}')))

echo "Used memory: $percent% ($umem"MB"/$tmem"MB")"