unix, Operating System

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what is difference between file descriptor and file pointer?

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Q. Why do several systems store the operating system in firm ware and others on disk? Answer: For certain devices such like handheld PDAs and cellular telephones a disk with

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Write a note on semaphores A semaphore is a tool meant for synchronizing multiple processes trying to access a shared variable. That is a semaphore is used to deal with the cri

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What are the differences between process and thread? The fundamental difference between a process and a thread is that a process has an entire copy of the program to itself and

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What are a safe state and an unsafe state? Answer:  A state is safe if the system can allocate resources to every process in some order and still avoid a deadlock. A system is

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