Create swap space in Ubuntu 16

For example, create 32GB swap space at /mnt/swap

• sudo fallocate -l 32G /mnt/swap
• sudo chmod 600 /mnt/swap
• sudo mkswap /mnt/swap
• sudo swapon /mnt/swap
• free -g
• sudo vi /etc/fstab
  • /mnt/swap swap swap defaults 0 0

To disable it

• sudo swapoff /mnt/swap