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Welcome to the Filters and Regular Expressions MCQs Page

Dive deep into the fascinating world of Filters and Regular Expressions with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Filters and Regular Expressions, a crucial aspect of UNIX. In this section, you will encounter a diverse range of MCQs that cover various aspects of Filters and Regular Expressions, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within UNIX.

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Check out the MCQs below to embark on an enriching journey through Filters and Regular Expressions. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of UNIX.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Filters and Regular Expressions. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Filters and Regular Expressions MCQs | Page 17 of 18

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Q161.
awk makes a distinction between numeric and string variables.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (b).False
Q162.
Which one of the following is the most powerful filter?

a.

awk

b.

grep

c.

sed

d.

perl

Discuss
Answer: (d).perl
Q163.
A perl program runs in a special interpretive mode.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (a).True
Q164.
To test whether perl is in your PATH, use ____

a.

perl -e

b.

perl -i

c.

perl -el

d.

perl -ed

Discuss
Answer: (a).perl -e
Q165.
It is often more convenient to save perl program files with ____ extension.

a.

.gp

b.

.sh

c.

.awk

d.

.pl

Discuss
Answer: (d)..pl
Q166.
___ function is used for removing the last character from the line.

a.

cut

b.

chop

c.

erase

d.

split

Discuss
Answer: (b).chop
Q167.
perl variables have no type and no initialization.

a.

True

b.

False

c.

May be

d.

Can't say

Discuss
Answer: (a).True
Q168.
When a string is used for numeral computations, perl converts it into ___

a.

character

b.

floating point number

c.

number

d.

boolean value

Discuss
Answer: (c).number
Q169.
If a variable is undefined, its value is ____

a.

0

b.

1

c.

NULL

d.

garbage

Discuss
Answer: (a).0
Q170.
Which of the following are concatenation operators?

a.

/

b.

.

c.

_

d.

\\

Discuss
Answer: (d).\\
Page 17 of 18

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