Which of the following best describes a system call that makes one file descriptorbecome a copy/duplicate of another file descriptor, closing the other file descriptorfirst if necessary?dup(2)O dup2(2)close(2)All of the above.None of the above. What member of the stat structure contains the size of the file in bytes?st_modeO st_sizest_blocksst_nlinksNone of the aboveWhich of the following members of the stat structure would change if a file'spermissions are altered? Assume fstat(2) is called again.O st_atimst_mtimO st_ctimO All of the above.O None of the above.

Linux system calls dup() and dup2(). dup() system call duplicates a file descriptor and new…

Answered: Which of the follov become a copy/du…

Engineering

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Which of the follov become a copy/du first if necessary? O dup(2)

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Linux

An operating system (OS) is the software which manages hardware and resources, like CPU, storage and memory. The OS bridges the applications and hardware and makes the connections between all of your software and the hardware resources.

Question

Which of the following best describes a system call that makes one file descriptor
become a copy/duplicate of another file descriptor, closing the other file descriptor
first if necessary?
dup(2)
O dup2(2)
close(2)
All of the above.
None of the above.

What member of the stat structure contains the size of the file in bytes?
st_mode
O st_size
st_blocks
st_nlinks
None of the above
Which of the following members of the stat structure would change if a file's
permissions are altered? Assume fstat(2) is called again.
O st_atim
st_mtim
O st_ctim
O All of the above.
O None of the above.

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