Tough Shell Scripting Test - 87+ MCQs: Shell Scripting Quiz: Test Your Command Line Skills with Shell Script Questions and Answers

1. How do you declare and use a variable in a shell script?

var = 10

set var = 10

var := 10

var=10

2. Explain how to handle signals in a shell script for graceful termination.

Use 'kill' command

Ignore signals

Use 'trap' command to handle signals

Terminate immediately on receiving a signal

3. What command is used to display the manual for a command in a shell script?

man

help

info

manual

4. How can you perform floating-point arithmetic in a shell script?

Use 'expr' command

Convert to integer and then divide

Use external tools like 'bc'

Shell scripting does not support floating-point arithmetic

5. Which command is used to print the last lines of a file in a shell script?

tail

last

end

printtail

6. Explain how to use the 'select' construct for menu-driven scripts in advanced shell scripting.

Create a selection list

Use 'if-else' statements

Define case statements

Select the appropriate option

7. How can you perform a non-blocking read from a file descriptor in a shell script?

Use 'cat' command

Use 'read -t' option

Use 'tail' command

Non-blocking read is not possible in shell scripting

8. What is the purpose of the 'paste' command in shell scripting?

Merge files horizontally

Copy files

Display file contents

Move files

9. What does the shebang line '#!' specify in a shell script?

Comment line

Interpreter path

File encoding

Function definition

10. What is the purpose of the 'alias' command in a shell script?

Create a shortcut for a command

Define a new variable

Hide file contents

Rename a file

11. What command is used to display the current working directory in a shell script?

pwd

dir

12. How can you pass command-line arguments to a shell script?

Using the 'input' command

Using environment variables

Using the 'echo' command

Using '$1', '$2', etc.

13. What does the command 'grep' do in shell scripting?

Find and replace text

Print environment variables

Search for patterns in files

Create a new directory

14. How do you implement dynamic function calls in a shell script?

Use 'eval' command

Create aliases for functions

Concatenate strings to form function names

Dynamic function calls are not supported in shell scripting

15. How do you dynamically generate function names in a shell script?

Use 'function' keyword

Concatenate strings to form function names

Use 'eval' command

Create aliases for functions

16. What does the 'shift' command do in shell scripting?

Move file contents

Shift bits in a file

Move positional parameters

Switch user

17. What is the purpose of the 'awk' command in shell scripting?

Text processing and pattern matching

Advanced file copying

Directory navigation

Interactive shell

18. How can you implement error handling in a shell script for better debugging?

Redirect errors to /dev/null

Use 'exit' command on error

Use 'set -e' option

Ignore errors for smooth execution

19. In a shell script, how do you run a script located in the current directory?

./script.sh

run script.sh

execute script.sh

sh script.sh

20. What does the 'tee' command do in a shell script?

Brews tea

Displays text on the screen

Reads input from a file

Redirects output to a file and the screen

Shell Scripting MCQ Test 4