Swap

Add Own Swap File

Create an empty file

sudo dd if=/dev/zero of=/media/swapfile.img bs=1G count=32

bs=1G means the size unit is 1GiB.

Make it to a swap filesystem:

sudo chmod 600 /media/swapfile.img
sudo mkswap /media/swapfile.img

Bring up on boot:

# Add this line to /etc/fstab
/media/swapfile.img swap swap sw 0 0

Activate:

sudo swapon /media/swapfile.img