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____ system call is used for positioning the offset pointer.

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____ system call is used for positioning the offset pointer.

(a) read

(b) write

(c) open

(d) lseek

This question was posed to me by my college director while I was bunking the class.

This is a very interesting question from System Calls Basics topic in portion System Programming I – Files of Unix

1 Answer

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Right answer is (d) lseek

The explanation is: The lseek system call moves the file offset pointer to a specified point. It doesn’t do any physical I/O rather it determines the position in the file where the next I/O operation will take place.

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