Linux Swap

For a partition:

Format the new partition with mkswap /dev/sdx1

Add the new swap partition to /etc/fstab.

Run swapon -a to activate the new swap.

To add a swap file:

Create the file. This command creates a 1 gigabyte file: dd if=/dev/zero of=/swap bs=1M count=1000

Format the swap file: mkswap /swap

Add the new swap file to /etc/fstab: /swap swap swap defaults 0 0

Run swapon -a to activate the new swap.