Job offersCompaniesTestsBlogI'm an employerSign upLog in
fr
fr
Home>IT Tests>Questions>Linux

30 interview questions on Linuxfor developers (2026)

Test your technical skills before an interview of Linux with 30 corrected questions. Beginner, Intermediate or Expert level.

or
Technology
Profession
Test
Sort by
Newest
Most popular
Last review
Filter by
Published
3889
To review
14
30 questions
Hard
7 votes1187 runs1 comment

How to create a snapshot of a logical volume in Linux

DevOps
logical volume
snapshot
Kevin Lefevreat Nov 27, 2021
Easy
7 votes1151 runs0 comment

List running processes.

DevOps
linux
processes
Kevin Lefevreat Sep 19, 2022
Hard
7 votes1135 runs1 comment

Configure the /etc/resolv.conf file to use the following nameservers: 10.1.1.1, 10.2.2.2, 10.3.3.3.

DevOps
linux
resolver
Kevin Lefevreat Jan 2, 2024
Easy
5 votes1168 runs0 comment

Change file mode bits.

DevOps
chmod
file
Kevin Lefevreat Nov 27, 2021
Hard
4 votes1146 runs1 comment

Change file permission of /home/strawberry/.ssh/authorized_keys to 600,Change file permission of /home/strawberry/ to 755

DevOps
linux
file permissions
Clément Devos (W3D Team)at Nov 27, 2021
Hard
4 votes1144 runs0 comment

What are the parameters passed to the kernel at boot time?

DevOps
kernel
parameters
Kevin Lefevreat Nov 27, 2021
Hard
4 votes1140 runs0 comment

What does the `-p` option do in `passwd` command?

DevOps
linux
password
Kevin Lefevreat Mar 6, 2023
Hard
3 votes1158 runs0 comment

What is the default number of processes in a Linux system?

DevOps
linux
command
Kevin Lefevreat Dec 2, 2021
Medium
2 votes1193 runs0 comment

Where is the shadow file located in a Linux system?

DevOps
linux
file
Kevin Lefevreat Nov 27, 2021
Hard
2 votes1189 runs0 comment

What is the output of the following command? echo $?

DevOps
exit status
command
Kevin Lefevreat Nov 27, 2021
Easy
2 votes1149 runs0 comment

What is the PATH environment variable?

DevOps
directories
path
Kevin Lefevreat Nov 27, 2021
Hard
2 votes1122 runs0 comment

What is the default configuration for a Linux system?

DevOps
linux
active-active
Kevin Lefevreat Nov 27, 2021
Medium
2 votes441 runs0 comment

How to run a process in background in Linux

DevOps
background
process
Lebelat Nov 6, 2023
Hard
1 vote1198 runs0 comment

What is the name of the routing protocol that uses a single IP address to reach multiple destinations?

DevOps
networking
routing
Kevin Lefevreat Nov 27, 2021
Medium
1 vote1157 runs0 comment

How to check if a file exists in Linux

DevOps
linux
system
Kevin Lefevreat Nov 27, 2021
Hard
1 vote1152 runs0 comment

Find the path of the first partition of the disk with the device name 'sda'

DevOps
linux
disk
Kevin Lefevreat Nov 27, 2021
Hard
1 vote1148 runs0 comment

What is the output of the following command? `ls -l /dev/sda1 | awk '{print $5}'`

DevOps
linux
system
Kevin Lefevreat Nov 27, 2021
Medium
1 vote362 runs0 comment

In which configuration file can the user shell be set ?

DevOps
William Meadat Jan 19, 2024
Hard
0 vote1177 runs0 comment

How to allow or deny access to a port in Linux

DevOps
linux
firewall
Kevin Lefevreat Dec 2, 2021
Hard
0 vote1152 runs0 comment

Capture all packets from 10.10.10.10's port 53 to host 172.16.0.1 on interface eth0.

DevOps
tcpdump
ip address
hostname
Kevin Lefevreat Nov 27, 2021