Describe inodes and file descriptors. What is the use of swap

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Inodes are data structures that store information about files on a Unix/Linux file system. File descriptors are unique identifiers for open files. Swap is a space on a hard disk used as virtual memory.

Inodes contain metadata about files such as ownership, permissions, and timestamps.
File descriptors are used by the operating system to keep track of open files and to perform I/O operations on them.
Swap is used when the amount of physical memory (RAM) is insufficient to hold all the data that the system needs to access.
When the system runs out of physical memory, it moves some of the data from RAM to the swap space on the hard disk.
This frees up physical memory for other processes to use, but accessing data from swap is slower than accessing data from RAM.

Describe inodes and file descriptors. What is the use of swap

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