Process forking in computing involves creating a new process $($child$)$ that is a duplicate of an existing process $($parent$).$ It is used for:$1.$ Parallelism: To execute multiple tasks concurrently, utilizing multiple CPU cores for improved performance$\mathrm{.}2.$ Concurrency: Handling multiple tasks simultaneously, such as serving multiple clients in server applications$\mathrm{.}3.$ Isolation: Ensuring that each child process operates independently with its own memory space$\mathrm{.}4.$ Fault Tolerance: Isolating errors or crashes in one child process from affecting others.For example, in a text processing program, forking can be used to process a large text file concurrently. The parent process divides the work and spawns child processes to handle different sections of the file, resulting in faster processing.

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