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1,887 linux interview questions shared by candidates

What is Linux? What is the difference between Unix and Linux? What is the shell in Linux? What is a process in Linux? What is a daemon in Linux? What is a kernel in Linux? What is the difference between a soft link and a hard link? How do you check the disk space on a Linux system? How do you check the memory usage on a Linux system? How do you create a new user in Linux? How do you change the permissions of a file in Linux? What is the difference between chmod and chown commands? How do you find files in Linux? What is a grep command in Linux? What is the difference between grep and awk commands?
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Linux Systems Administrator

Interviewed at JustDial

3.3★
Mar 24, 2023

What is Linux? What is the difference between Unix and Linux? What is the shell in Linux? What is a process in Linux? What is a daemon in Linux? What is a kernel in Linux? What is the difference between a soft link and a hard link? How do you check the disk space on a Linux system? How do you check the memory usage on a Linux system? How do you create a new user in Linux? How do you change the permissions of a file in Linux? What is the difference between chmod and chown commands? How do you find files in Linux? What is a grep command in Linux? What is the difference between grep and awk commands?

Round 1 HR: (1 person ) 30 min Q: Tell me about yourself Q: Linux commands questions like grep, awk, sed Q: Have you worked on on-prem VM's ? Q: What databases have you worked on? Q: Most challenging project and how you helped? Q: Do you know Jenkins and scripting in Groovy? Q: What language do you usually script in: python, bash, or both? Q: How would you check if the VM is down? Q: How to check if the disk space is running out? What steps will you take to rectify it? Q: Difference between inode and notify Round 2 : Take home Coding assignment: Q: Given a string like 'aaabccdee', return count of characters to remove to make it an string with all chars having even frequency Q: Given an array with days in it, write a function that takes a day and n as an input and returns the day that's n days from day. eg: ('wed', 3)=> sat Q: Given a file structure for music, images, videos arrange the extensions of file in their respective dir. eg : .jpg in images folder, .mp3 in music, .avi in videos folder. Round 3: Group Interview: (2 people): 90min Q: Command to see services running on VM Q: How would you manage certificates on VM? Q: What are docker layers? Q: What is docker multistage? Q: Difference between NodePort and ClusterIP? Q: How to check if the Apache service is running? Q: How did you migrate the Certificate? ( eg : Godaddy to ACM) Q: Where are the certificates stored? Q: Do you know certificate architecture in general? Explain it. Q: Explain how the client authenticates with a server? Q: Terraform vs Ansible ? Why did you choose Terraform? Q: Live coding: Fibonacci series for first 30 numbers. Any language.
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Intermediate DevOps/SRE Engineer (Linux)

Interviewed at Global Relay

2.5★
Jan 25, 2023

Round 1 HR: (1 person ) 30 min Q: Tell me about yourself Q: Linux commands questions like grep, awk, sed Q: Have you worked on on-prem VM's ? Q: What databases have you worked on? Q: Most challenging project and how you helped? Q: Do you know Jenkins and scripting in Groovy? Q: What language do you usually script in: python, bash, or both? Q: How would you check if the VM is down? Q: How to check if the disk space is running out? What steps will you take to rectify it? Q: Difference between inode and notify Round 2 : Take home Coding assignment: Q: Given a string like 'aaabccdee', return count of characters to remove to make it an string with all chars having even frequency Q: Given an array with days in it, write a function that takes a day and n as an input and returns the day that's n days from day. eg: ('wed', 3)=> sat Q: Given a file structure for music, images, videos arrange the extensions of file in their respective dir. eg : .jpg in images folder, .mp3 in music, .avi in videos folder. Round 3: Group Interview: (2 people): 90min Q: Command to see services running on VM Q: How would you manage certificates on VM? Q: What are docker layers? Q: What is docker multistage? Q: Difference between NodePort and ClusterIP? Q: How to check if the Apache service is running? Q: How did you migrate the Certificate? ( eg : Godaddy to ACM) Q: Where are the certificates stored? Q: Do you know certificate architecture in general? Explain it. Q: Explain how the client authenticates with a server? Q: Terraform vs Ansible ? Why did you choose Terraform? Q: Live coding: Fibonacci series for first 30 numbers. Any language.

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