What is the primary purpose of a Linux swap partition or file?

Question

Accepted Answer

To extend usable memory by paging out idle pages from RAM to disk — Swap provides backing store so the kernel can move inactive memory pages out of RAM, easing memory pressure and enabling hibernation. It is not for the bootloader, home directories, or package caches.

Answer

To store the bootloader and kernel images needed to start the system

Answer

To hold user home directories separately from the root filesystem

Answer

To cache package downloads so apt and dnf reinstall faster

What is the primary purpose of a Linux swap partition or file?

Why this is the answer

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