Linux Swap and Swapfile

Add/Remove Swapfile Short Guide

Swap On

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo nano /etc/fstab

/swapfile swap swap defaults 0 0

Swap Off

sudo swapoff -a     # sudo swapoff /swapfile
sudo rm -f /swapfile
sudo nano /etc/fstab

#/swapfile swap swap defaults 0 0

Check

sudo swapon --show
sudo free -h