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UNIX/Linux abstracts data files stored on magnetic media as byte arrays. 1/O operations are performed with respect to a file position, which is a pointer
UNIX/Linux abstracts data files stored on magnetic media as byte arrays. 1/O operations are performed with respect to a file position, which is a pointer specifying the offset of the first byte to be read from or written from the origin of the file. Following a successful 1/0 operation the file position is incremented by the number of bytes read or written.Hence access to ordinary files is sequential. However random or direct access to any location of a file can also be implemented by setting the file pointer to the proper offset. Define the components of a file organization that would allow direct access to the records stored in an ordinary file; and describe briefly how these components are generated or built Assuming that a program uses the file access method you have defined herein, list the actions it should implement to access a given record randomly. (dzenlendi) UNIX/Linux abstracts data files stored on magnetic media as byte arrays. 1/O operations are performed with respect to a file position, which is a pointer specifying the offset of the first byte to be read from or written from the origin of the file. Following a successful 1/0 operation the file position is incremented by the number of bytes read or written.Hence access to ordinary files is sequential. However random or direct access to any location of a file can also be implemented by setting the file pointer to the proper offset. Define the components of a file organization that would allow direct access to the records stored in an ordinary file; and describe briefly how these components are generated or built Assuming that a program uses the file access method you have defined herein, list the actions it should implement to access a given record randomly. (dzenlendi)
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