#!/usr/bin/env bash

if [ "$(id -u)" -ne 0 ]; then
  echo "This script must be run as root." >&2
  exit 1
fi

echo "---------------------------"
echo "Running: ${0} ${*}"
echo
echo "free -h ; sync; for v in 1 2 3 1 ; do echo ${v} | tee /proc/sys/vm/drop_caches; done; free -h"

free -h  
sync 
for v in 1 2 3 1 ; do 
    echo ${v} | tee /proc/sys/vm/drop_caches 
done 
free -h

Cmd="/usr/sbin/swapoff -av"
echo ${Cmd} && ${Cmd}

Cmd="/usr/sbin/swapon -av"
echo ${Cmd} && ${Cmd}

echo "---------------------------"
echo "DONE: ${0} ${*}"
echo