Shell Scripting Interview Questions And Answers

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Refine your Shell Scripting interview skills with our 30 critical questions. Our questions cover a wide range of topics in Shell Scripting to ensure you're well-prepared. Whether you're new to the field or have years of experience, these questions are designed to help you succeed. Get the free PDF download to access all 30 questions and excel in your Shell Scripting interview. This comprehensive guide is essential for effective study and confidence building.

30 Shell Scripting Questions and Answers:

Shell Scripting Job Interview Questions Table of Contents:

Shell Scripting Job Interview Questions and Answers

1 :: What are PIDs?

They are process IDs given to processes. A PID can vary from 0 to 65535.

2 :: How do you send a mail message to somebody?

mail somebody@globalguideline.com -s ‘Your subject’ -c ‘ cc@globalguideline.com‘

3 :: How do you remove a file?

4 :: How do you remove recursively?

rm -rf

5 :: How do you find out your own username?

whoami

6 :: How do you count words, lines and characters in a file?

7 :: How do you search for a string inside a given file?

grep string filename

8 :: How do you search for a string inside a directory?

grep string *

9 :: How do you search for a string in a directory with the subdirectories recursed?

grep -r string *

10 :: How do you list currently running process?

11 :: How do you find out what’s your shell?

echo $SHELL

12 :: How do you fire a process in the background?

./process-name &

13 :: How do you refer to the arguments passed to a shell script?

, and so on. {xtypo_info}$1, $2 and so on. $0 is your script name.{/xtypo_info} is your script name.

14 :: What’s the conditional statement in shell scripting?

if {condition} then … fi

15 :: How do you do number comparison in shell scripts?

-eq, -ne, -lt, -le, -gt, -ge

16 :: How do you test for file properties in shell scripts?

-s filename tells you if the file is not empty, -f filename tells you whether the argument is a file, and not a directory, -d filename tests if the argument is a directory, and not a file, -w filename tests for writeability, -r filename tests for readability, -x filename tests for executability

17 :: How do you do Boolean logic operators in shell scripting?

! tests for logical not, -a tests for logical and, and -o tests for logical or.

18 :: How do you find out the number of arguments passed to the shell script?

19 :: What’s a way to do multilevel if-else’s in shell scripting?

if {condition} then {statement} elif {condition} {statement} fi

20 :: How do you write a for loop in shell?

for {variable name} in {list} do {statement} done

21 :: How do you find out the current directory you’re in?

pwd

22 :: What’s the command to find out users on the system?

who

23 :: What’s the command to find out today’s date?

date

24 :: How do you stop a process?

kill pid

25 :: How do you find out about all running processes?

ps -ag