DISTANCE EDUCATION
M.Sc. (Software Engineering) Year Integrated) DEGREE
EXAMINATION, MAY 2018.
UNIX AND SHELL PROGRAMMING
Time Three hours Maximum 100 marks
SECTION A — x 8 40 marks)
Answer any FIVE of the following.
1. Explain about any four disk utility commands in Unix
operating system.
2. Discuss the text processing commands in Unix operating
system.
3. Explain the Filter and Pipe concepts in Unix Operating
System.
4. Discuss the pre-defined variable in Unix programming
with examples.
5. Discuss the Associative arrays in C shell programming
with examples.
6. Write a note on the following
Field
Record.
7. Discuss the C shell features with examples.
8. Explain about the positional parameters in Unix with
examples.
Sub. Code
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DE-4154
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wk14
SECTION B — x 15 60 marks)
Answer any FOUR of the following.
9. Discuss the following with examples.
Security by file permission
Process utilities
Backup utilities.
10. Explain the kernel system of the Unix operating system.

11. Write a shell program to reverse a string.
12. Write a C shell program to sort a set of N numbers.
13. Describe the working principles of various looping
structures in Unix shell programming.
14. Write a note on the following
File structures
Debugging scripts
Expression .
15. Discuss the various directory API commands with
examples.