#!/bin/sh
#
# a script to simply display the accurate memory usage for the linux system.
# gnu-gpl feel free to copy edit or any any other change use or abuse this code,# so long as you don't try to claim ownership thereof to the exclusion of the
# rights of others to use, and do the same with it.   thank you !
#
#
#
mem="`cat /proc/meminfo | tr "\n" "#" | tr -d "[A-z] :"`"
memused="$(((`echo "$mem" | cut -d'#' -f1` - `echo "$mem" |\
 cut -d'#' -f2` - `echo "$mem" | cut -d'#' -f3` - `echo "$mem" |\
  cut -d'#' -f4`) / 1024))"
memtotal="$((`echo "$mem" | cut -d'#' -f1` / 1024))"
memper="$((($memused * 100) / $memtotal))"
echo "Mem usage: $memused/$memtotal MB ($memper%)"