How Do I Create a Swap File in an Existing Linux Data Partition?

Where can I create a swap file?

Adding swap space in Linux

1. Create a swap file using the dd command. …
2. Change the permission of the swap file using the chmod command so that only root can access it. …
3. Make this file a swap file using the mkswap command. …
4. Enable the newly created swapfile using the swapon command.

What is a Linux swap file?

A swap file allows an operating system to use hard disk space to simulate extra memory. … Other operating systems, like Linux and Unix, set aside a permanent swap space that reserves a certain portion of your hard disk.