42 interview questions for developers (2025)

Hard

2 votes363 runs0 comment

Display lines containing 'Error' in all .txt files

System Administrator

grep

bash

Anonymous authorat Sep 19, 2022

Medium

1 vote364 runs0 comment

Find the default shell for a user in Bash

System Administrator

bash

shell

Anonymous authorat Sep 19, 2022

Hard

1 vote328 runs

1 comment

Find all rows containing patterns 1 and 2 in a file using Bash

System Administrator

bash

grep

regular expression

Anonymous authorat Sep 19, 2022

Medium

1 vote323 runs0 comment

What does the shell prompt `user@user:~$` mean?

System Administrator

bash

shell

Anonymous authorat Sep 19, 2022

Hard

1 vote298 runs

3 comments

How to count the number of lines in a file in Bash

System Administrator

bash

command line

wc

Anonymous authorat Mar 23, 2022

Easy

1 vote285 runs0 comment

What does 2>&1 means in the script below? ``` compile "$i" > "${i%.txt}".ass 2>&1 ```

System Administrator

bash

redirect

Anonymous authorat Sep 19, 2022

Hard

1 vote211 runs0 comment

Which line deletes all files in a directory? (visible and hidden files)

System Administrator

bash

files

F. Boutalebat Apr 28, 2023

Medium

1 vote82 runs0 comment

How to set the permissions of a file in Bash?

System Administrator

permissions

chmod

Anonymous authorat Mar 23, 2022

Hard

1 vote80 runs0 comment

Display lines 4 to 12 of a file in Bash

System Administrator

bash

file

Anonymous authorat Mar 23, 2022

Easy

1 vote57 runs0 comment

What is the order of the arguments when we want to execute a command in Bash?

System Administrator

command

arguments

Anonymous authorat Mar 23, 2022

Expert

0 vote338 runs0 comment

Write a bash script that prints the numbers from 1 to 11.

System Administrator

bash

functions

arguments

Anonymous authorat Sep 19, 2022

Hard

0 vote316 runs0 comment

How to do an infinite loop in bash?

System Administrator

loops

bash

Anonymous authorat Mar 23, 2022

Expert

0 vote312 runs0 comment

How to use egrep and diff in Bash

System Administrator

bash

command line

Anonymous authorat Sep 19, 2022

Medium

0 vote298 runs0 comment

Explain what happens when the user types a command in a shell.

System Administrator

shell

command

Anonymous authorat Mar 23, 2022

Expert

0 vote296 runs0 comment

Write a Bash script that prints 3.

System Administrator

bash

variables

operators

Anonymous authorat Sep 19, 2022

Medium

0 vote292 runs0 comment

Write the first 10 lines of a file in Bash

System Administrator

bash

file

Anonymous authorat Mar 23, 2022

Medium

0 vote290 runs0 comment

Write a Bash script that counts the number of lines in all text files in the current directory.

System Administrator

bash

loops

files

Anonymous authorat Sep 19, 2022

Hard

0 vote288 runs0 comment

Return the parent directory of a path in Bash

System Administrator

bash

command line

Anonymous authorat Mar 23, 2022

Medium

0 vote286 runs0 comment

Declare a function in Bash with or without the keyword `function`

System Administrator

functions

Anonymous authorat Mar 23, 2022

Hard

0 vote283 runs0 comment

Switch to privileged mode in Bash

System Administrator

sudo

privileges

Anonymous authorat Sep 19, 2022

42 interview questionsfor developers (2025)

Test your developer skills before an interview with 42 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

Display lines containing 'Error' in all .txt files

Find the default shell for a user in Bash

Find all rows containing patterns 1 and 2 in a file using Bash

What does the shell prompt `user@user:~$` mean?

How to count the number of lines in a file in Bash

What does 2>&1 means in the script below? ``` compile "$i" > "${i%.txt}".ass 2>&1 ```

Which line deletes all files in a directory? (visible and hidden files)

How to set the permissions of a file in Bash?

Display lines 4 to 12 of a file in Bash

What is the order of the arguments when we want to execute a command in Bash?

Write a bash script that prints the numbers from 1 to 11.

How to do an infinite loop in bash?

How to use egrep and diff in Bash

Explain what happens when the user types a command in a shell.

Write a Bash script that prints 3.

Write the first 10 lines of a file in Bash

Write a Bash script that counts the number of lines in all text files in the current directory.

Return the parent directory of a path in Bash

Declare a function in Bash with or without the keyword `function`

Switch to privileged mode in Bash