====== How to Add Swap Space On Linux systems ======


First, create a file that will be used as swap:

<code>fallocate -l 2G /swapfile</code>

If the fallocate utility is not present on your system, or you get an error message saying fallocate failed: Operation not supported, use the following command to create the swap file:

<code>dd if=/dev/zero of=/swapfile bs=1024 count=2097152 (4194304)</code>

Set the file permissions to 600 to prevent regular users to write and read the file:

<code>chmod 600 /swapfile</code>

Create a Linux swap area on the file:

<code>mkswap /swapfile</code>

Activate the swap file by running the following command:

<code>swapon /swapfile</code>

To make the change permanent open the /etc/fstab file:

<code>nano /etc/fstab</code>

<code>/swapfile swap swap defaults 0 0</code>

Verify that the swap is active by using either the swapon or the free command, as shown below:

<code>swapon --show</code>



Source: [[https://linuxize.com/post/how-to-add-swap-space-on-ubuntu-20-04/|How to Add Swap Space]]