Question: Which file descriptors ( the numbers ) are pre - opened on the CSE machines? What is the first free file descriptor? Write a program

Which file descriptors (the numbers) are pre-opened on the CSE machines? What is the first free file descriptor? Write a program which will support your answers. Hint: Look at the dup(2) family of system calls, and the open(2) system call. Consider the errors which might possibly occur.

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