Simple and verborragic script to clean memory cache

#!/bin/sh

# I heavly adapted this script from http://www.vivaolinux.com.br/script/limpa-cache11sh
# I think the original code is ugly and slow, but has some usable lines.
# Instructions: Put this script on your path or create a alias for them, so you can use easily.


echo "Total memory in the system: $(sudo dmidecode -t 19 | grep Range|awk '{print $3 " " $4}')"
MEM1=$(free|awk '/Mem:/ {print int(100*$3/$2)}')
echo "RAM memory occupied before cleaning: $MEM1%"
echo "Cleaning RAM..."
sync
echo 3 | sudo tee /proc/sys/vm/drop_caches >/dev/null
echo "Cleaning swap..."
sudo swapoff -a
sudo swapon -a
MEM2=`free|awk '/Mem:/ {print int(100*$3/$2)}'`
echo "Memory occupied after cleaning: $MEM2%"
echo "Economy: $(expr $MEM1 - $MEM2)%"

exit