UNIX Interview Questions and Answers for 2025

Описание: In this video, we cover the most commonly asked UNIX interview questions and provide detailed answers to help you ace your next job interview. Whether you're preparing for a role in system administration, DevOps, or software development, this guide will help you strengthen your knowledge of UNIX and its core concepts.

We discuss essential topics like file system management, processes, permissions, commands, shell scripting, and more, all tailored to help you confidently answer technical questions in an interview setting.

📌 Topics Covered:

Basic UNIX commands
File management and file permissions
Process management
Shell scripting fundamentals
Networking commands in UNIX
Common troubleshooting and debugging techniques

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1. What Is Unix? Explain Its Key Features.
2. What Are The Differences Between UNIX And Linux?
3. What Is The Purpose Of The File System In UNIX?
4. Explain The Concept Of A Process In Unix.
5. What Is The Significance Of The Kernel In UNIX?
6. How Do You List Files in Directory? What Command Do You Use?
7. Explain The Use Of The Chmod Command. How Do You Change File Permissions?
8. What Does The Grep Command Do? Provide An Example Of Its Usage.
9. How Can You Find The Current Working Directory In UNIX?
10. What Is A Symbolic Link, And How Do You Create One?
11. Describe The Difference Between Hard Links And Soft Links.
12. How Do You View the Content of File in UNIX? Name at Least Three Commands.
13. What Is The Purpose Of The Tar Command? How Do You Create And Extract A .Tar File?
14. What Are The Common File Types Found In Unix?
15. Explain The Concept Of Inodes In The Unix File System.
16. How Do You Check The System Uptime And Load Average In UNIX?
17. What Commands Would You Use to Monitor System Performance?
18. How Do You Schedule A Task To Run At A Specific Time In Unix?
19. How Can You Check Network Connectivity in UNIX? Name a Command.
20. What Are Some Common Security Practices for UNIX Systems?

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