RR320505 Advanced Unix Programming B.Tech Question Paper : djriet.edu.in

Name of the College : Dasari Jhansi Rani Institute Of Engineering And Technology
University : JNTUK
Department : Computer Science And Engineering
Subject Code/Name : RR320505 – Advanced Unix Programming
Year : 2008
Degree : B.Tech
Year/Sem : III/II
Website : djriet.edu.in
Document Type : Model Question Paper

Advanced Unix Programming : https://www.pdfquestion.in/uploads/djriet.edu.in/2938-RR320505-ADVANCED-UNIX-PROGRAMMING.pdf

DJRIET Advanced Unix Programming Question Paper

Set No. 1

( Common to Computer Science & Engineering, Information Technology and Computer Science & Systems Engineering)
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions

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All Questions carry equal marks :
1. Explain the following commands with syntax
(a) finger
(b) find
(c) unlink
(d) ulimit. [4×4=16]
2. Explain the following commands with syntax
(a) fgrep
(b) egrep
(c) paste
(d) tee. [4×4=16]

3. Explain the following functions with syntax:
(a) read()
(b) write()
(c) open()
(d) close() [4×4=16]

4. Is there any way for a function that is called by main function to examine the command-line arguments without
(a) Passing ‘argc’ and ‘argv’ as arguments from main to the function.
(b) Having main copy ‘argc’ and ‘argv’ into global variables. [8+8]

5. (a) What are the phases in signaling process? Explain what is meant by the lifetime of a signal. [3+5]
(b) What is meant by signal catching function? What are the advantages of signal function. [3+5]

6. (a) Explain in detail about the requirements of file locking mechanism. [8]
(b) With an example, Explain about the setting a lock. [3+5]
7. Explain in detail about the System V IPCs. [16]

8. (a) Explain, How to place “Data in shared memory”. [8]
(b) What is the use of destroying a shared memory segment? Explain the process of “destroying a shared memory segment”. [3+5]

Set No. 2

1. Explain the following commands with syntax
(a) finger
(b) find
(c) unlink
(d) ulimit. [4×4=16]
2. What is the purpose of Stream editor? Explain which option should be used to place the contents of a file f1 after line. [4+12]
3. Explain the following system calls with syntax:
(a) fgets()
(b) gets()
(c) fseek()
(d) putc() [4×4=16]

4. Explain the following system calls with syntax:
(a) fork()
(b) vfork()
(c) exit()
(d) wait() [4×4=16]

5. (a) What is signal function? Write and explain about the structure of signal function. [3+5]
(b) What are the phases in signaling process? Explain what is meant by the lifetime of a signal. [3+5]
6. (a) Explain in detail about the requirement of file locking mechanism.
(b) Explain in detail about fcntl( ) function. [8+8]

7. (a) Write about the Timing comparison of “Semaphores Vs Record locking”. [8]
(b) Write about the semaphore adjustment on “exit”. Explain about the importance of SEM UNDO. [3+5]

Set No. 3

1. Explain the following commands with syntax
(a) ftp
(b) date
(c) arp
(d) rlogin. [4×4=16]
2. Write a shell script that searches for a pattern (supplied as argument) in all file names in the current directory and then calls up the vi editor into those files containing the pattern. How will you repeat the search in the current file and other files? [8+8]
3. Explain in detail about the following:
(a) Directories
(b) System calls [8+8]

4. Suppose a process does not wish to block until its children terminate. How can it ensure that child processes are cleaned up when they terminate? [16]
5. (a) What is signal handler? Explain how to install a signal Handler? [3+5]
(b) Write in detail about “Predefined signal handlers”. [8]
6. (a) What is region lock? What are the rules about the specification of the region to be locked or unlocked? [3+5]
(b) Write about file locking versus Record Locking. [8]

7. (a) What are the named pipes? Explain in detail. [3+5]
(b) Explain, in detail about the client – server communication using FIFOS. [8]
8. What is shared memory? What is the importance of it? Explain in detail about the process of “Allocating a shared memory segment”. [3+5+8]