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In this article, we will talk about Swap files, and how to create swap space in Linux using a swap file. But before we begin, we need to clarify what swap actually is. Swap is reserved disk space that is used as a place where the OS can temporarily store data when the physical RAM memory is full or close to full. In other words, swap is reserved virtual memory on the disk. Usually, swap is used to improve and maintain system performance when we are dealing with some resource-heavy tasks.
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