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README.md

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 ### :nerd_face: Using System V technology.
 
 Semaphores enable processes to query or alter status information. They are often used to monitor and control the availability of system resources such as shared memory segments. Semaphores can be operated on as individual units or as elements in a set. The semaphore set must be initialized using semget. The semaphore creator can change its ownership or permissions using semctl. Any process with permission can use semctl to do control operations.