Create swap for Ubuntu 20.04

Create swap for Ubuntu 20.04

sudo fallocate -l 2G /swapfile &&
sudo dd if=/dev/zero of=/swapfile bs=1024 count=2097152 &&
sudo chmod 600 /swapfile &&
sudo mkswap /swapfile &&
sudo swapon /swapfile &&
echo "/swapfile swap swap defaults 0 0" | sudo tee -a /etc/fstab &&
sudo swapon --show

Remove swap for Ubuntu 20.04

swapon --show

sudo swapoff /swapfile &&
sudo rm  /swapfile