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Linux Swap File Alternatively, you can create a Linux Swap File after the installation. The modern Linux Kernel allows Swapping to a swap file instead of a swap partition. A swap file has an advantage over a swap partition that you can change the size of your swap any time easily by changing a swap file size.

If you want to create a swap file, run this command first:

sudo fallocate -l 8G /swapfile

Note: this command is to create a 1Gb swap file. Replace 1G with the value you want.

Next, you have to set the correct permissions.

sudo chmod 600 /swapfile

Then, format the file to swap.

sudo mkswap /swapfile

Finally, enable the swap.

sudo swapon /swapfile

Edit the file and add the following./etc/fstab

/swapfile none swap sw 0 0