Unix Interview Questions on Commands

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Unix Interview Questions: Unix is a powerful and widely used operating system that has been around since the 1970s. It is a versatile platform used by various organizations ranging from large enterprises to small businesses. Unix is known for its stability, security, and flexibility and is often the operating system of choice for servers, high-performance computing, and scientific research.

As such, there is a high demand for skilled Unix professionals in the job market. If you are preparing for a Unix interview, it is important to have a strong understanding of Unix fundamentals, commands, and system administration. In this context, Unix interview questions are a great way to assess a candidate’s knowledge and proficiency in Unix.

Unix interview questions can range from basic to advanced, covering topics such as file management, user management, process management, networking, shell scripting, and more. Being prepared to answer these questions can give you an edge in your job search and help you stand out from other candidates. This article will explore some common Unix interview questions and provide tips on approaching them.

Unix Interview Questions

  • How will you remove all files in the current directory? Including the files that are two levels down in a sub-directory.
  • What is the difference between the –v and –x options in Bash shell scripts?
  • What is a Filter in Unix command?
  • What is Kernel in the Unix operating system?
  • What is a Shell in Unix OS?
  • What are the different shells in Unix that you know about?
  • What is the first character of the output in ls –l command?
  • What is the difference between Multi-tasking and Multi-user environments?
  • What is Command Substitution in Unix?
  • What is an Inode in Unix?
  • What is the difference between absolute and relative paths in the Unix file system?
  • What are the main responsibilities of a Unix Shell?
  • What is a Shell variable?


The field of software technology has a high demand for Unix professionals, who can pursue a variety of career paths such as Unix Engineer, Administrator, Systems Engineer, and Analyst Engineer in Unix. A career in Unix offers growth opportunities and the chance to excel in your professional domain.

This Unix interview questions and answers post aims to assist both beginners and experienced candidates in successfully passing their Unix interview on their first attempt. We hope you found this resource helpful.

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