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.

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 15 of 18

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Q141.

The interval regular expression uses the character _______

{

}

{ and }

( and )

Discuss

Answer: (c).{ and }

Q142.

Which one of the following command will be used for adding two spaces before every line in emp.lst?

sed ‘s/^/ /’ emp.lst

sed ‘s / / /’emp.lst

sed ‘s /$/ /’emp.lst

sed ‘s/$/

Discuss

Answer: (a).sed ‘s/^/ /’ emp.lst

Q143.

Which shortcut does sed offer to replace the string Linux with Red hat Linux?

{ }

( )

Discuss

Answer: (d).&

Q144.

Which command will be used for selecting lines 3 to 10 from emp.lst?

sed 3,10 emp.lst

sed -n ‘3,10p’ emp.lst

sed -n ‘^,10p’ emp.lst

sed -n, 10p

Discuss

Answer: (b).sed -n ‘3,10p’ emp.lst

Q145.

Which filter apart from perl, is the most powerful?

sed

awk

grep

cut

Discuss

Answer: (b).awk

Q146.

Awk filter operates at field level.

True

False

May be

Can't say

Discuss

Answer: (a).True

Q147.

Which of the following will be used to print lines containing ‘manager’ in emp.lst?

awk ‘/manager/ { print }’ emp.lst

awk ‘/manager { print }’ emp.lst

awk ‘/manager/ { print } emp.lst

awk ‘manager { print }’ emp.lst

Discuss

Answer: (a).awk ‘/manager/ { print }’ emp.lst

Q148.

The default action if selection_criteria is missing is ____

split

print and split

no default action

Discuss

Answer: (a).print

Q149.

For pattern-matching, awk uses regular expressions in ____ style.

sed

grep

perl

Discuss

Answer: (a).sed

Q150.

awk uses ______ for splitting a line into fields.

special parameters

shell variables

env variables

command arguments

Discuss

Answer: (a).special parameters

Page 15 of 18

Welcome to the Filters and Regular Expressions MCQs Page

Filters and Regular Expressions MCQs | Page 15 of 18

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