Add 10GB Swapfile in Ubuntu

sudo fallocate -l 10G /www/swapfile && sudo chmod 600 /www/swapfile && sudo mkswap /www/swapfile && sudo swapon /www/swapfile && grep -qF '/www/swapfile' /etc/fstab || echo '/www/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab && swapon --show