swapon

Enables device or file for swapping.

• Get swap information:

swapon -s

• Enable a given swap partition:

swapon {{/dev/sdb7}}

• Enable a given swap file:

swapon {{path/to/file}}

• Enable all swap areas:

swapon -a

• Enable swap by label of a device or file:

swapon -L {{swap1}}