#!/bin/bash
free
cd /var
touch swap.img
chmod 600 swap.img
dd if=/dev/zero of=/var/swap.img bs=1024 count=1000
# first attempt on digital ocean,
# user calling sudo mkswap returned command not found,
#thus:
cd
cd /sbin
./mkswap /var/swap.img
./mkswap /var/swap.img
free