{"id":8603,"date":"2019-01-08T10:25:36","date_gmt":"2019-01-08T10:25:36","guid":{"rendered":"https:\/\/www.monsterindia.com\/career-advice\/11-unix-questions-and-answers-to-read-before-your-next-interview-8603\/"},"modified":"2023-03-27T11:16:46","modified_gmt":"2023-03-27T05:46:46","slug":"11-unix-questions-and-answers-to-read-before-your-next-interview","status":"publish","type":"post","link":"https:\/\/www.foundit.sg\/career-advice\/11-unix-questions-and-answers-to-read-before-your-next-interview\/","title":{"rendered":"11 UNIX Questions and Answers to read before your next interview"},"content":{"rendered":"\n

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When you attend an interview for a position in IT you will probably need a knowledge of how UNIX works. There are basic questions that will need to be answered and it is good to have a chance to study them.<\/span><\/p>\n\n\n\n

UNIX is one of the oldest operating systems with its beginnings going back to the beginning of the 70s. It is still popular today and used in environments that need maximum scalability and reliability.<\/span><\/p>\n\n\n\n

Shell Scripting or Programming mainly consists of current programming language features. A simple to intricate can be developed using Shell Scripting. It is a combination of UNIX commands written in a plain text file to secure a specific task. With the assistance of Shell scripting day-to-day tasks can be computerised. <\/span><\/p>\n\n\n\n

Many job listings for positions require UNIX<\/a> knowledge. This could be basic knowledge or expert skills in writing code.<\/span><\/p>\n\n\n\n

UNIX Interview Questions.<\/span><\/strong><\/span><\/h2>\n\n\n\n

1. What is UNIX?<\/span><\/strong><\/span><\/h3>\n\n\n\n

UNIX is a portable operating system designed for effective multi-user functions and multi-tasking. Its movability allows it to run on different hardware platforms. It allows users, control and processing under a shell.<\/span><\/p>\n\n\n\n

2. What are the Filters?<\/span><\/strong><\/span><\/h3>\n\n\n\n

A Filter refers to a program that can get input from typical input, perform an operation on the output and write results to standard output. A Filter is also any program that can be used between two other programs in a pipeline.<\/span><\/p>\n\n\n\n

3. What is a Kernel?<\/span><\/strong><\/span><\/h3>\n\n\n\n

The kernel is the UNIX operating system master program that controls the computer\u2019s resources assigning them to different users and carrying out different tasks. However, the Kernel doesn\u2019t have direct dealing with a user. It begins a separate interactive program called a shell for each user when they log on.<\/span><\/p>\n\n\n\n

4. What is Shell?<\/span><\/strong><\/span><\/h3>\n\n\n\n

A Shell works as a border between the system and the user. As a command analyst, the shell takes commands and sets them up for the application.<\/span><\/p>\n\n\n\n

5. What are Key Features of the Korn Shell?<\/span><\/strong><\/span><\/h3>\n\n\n\n

The features are:
<\/span>
\u2022 Job control <\/span>
\u2022 Arrays. <\/span>
\u2022 Command Aliasing. <\/span>
\u2022 String manipulation capabilities. <\/span>
\u2022 Built-in Integer Arithmetic. <\/span>
\u2022 History mechanism with a built-in editor that copies emacs or VI.<\/span><\/p>\n\n\n\n

6. Is it Possible to See Information About a Process While it is Being Executed?<\/span><\/strong><\/span><\/h3>\n\n\n\n

Every process is uniquely recognised by a process identifier. It is possible to view details and status concerning a process by using the \u2018ps\u2019 command.<\/span><\/p>\n\n\n\n

You may also like:<\/strong> 10 Questions that Won’t Get You the Job<\/a><\/p>\n\n\n\n

7. Differentiate Cat Command from More Command.<\/span><\/strong><\/span><\/h3>\n\n\n\n

When using the cat command to reveal file contents large data that does not fit on the screen would scroll off without pausing making it difficult to view. Using the more command is more appropriate in such cases because it will display file contents one screen page at a time.<\/span><\/p>\n\n\n\n

8. What is Wild-Card Interpretation?<\/span><\/strong><\/span><\/h3>\n\n\n\n

A command line includes wild-card characters such as \u2018*\u2019 or \u2018?\u2019. They are substituted by the shell with an organised list of files whose pattern matches the input command. Wild-card fonts set up a list of files for processing instead of having it stipulated one at a time.<\/span><\/p>\n\n\n\n

9. Differentiate Between Multiuser and Multitask.<\/span><\/strong><\/span><\/h3>\n\n\n\n

Multiuser means that more than one person uses the computer at the same time. Multitask means the computer can work on more than one program or task at the same time.<\/span><\/p>\n\n\n\n

10. What is Command Substitution?<\/span><\/strong><\/span><\/h3>\n\n\n\n

Command Substitution is one of the steps performed every time commands are managed by the shell. The shell executes only commands enclosed in backquotes.<\/span><\/p>\n\n\n\n

11. What is Inode?<\/span><\/strong><\/span><\/h3>\n\n\n\n

An inode is an entry on a section of the disk set which is set aside for a file system. The inode holds nearly all the information about a file. It includes:
<\/span>
\u2022 The place on the disk where the file starts. <\/span>
\u2022 Who owns the file. <\/span>
\u2022 The size of the file. <\/span>
\u2022 When the file was last used. <\/span>
\u2022 When the file was last changed. <\/span>
\u2022 What the various read, write and execute permissions are.<\/span><\/p>\n\n\n\n

An Online Course in UNIX Fundamentals.<\/span><\/strong><\/span><\/h2>\n\n\n\n

Online IT Courses offers a course in UNIX fundamentals. You will get technical knowledge on how to organise, install and manage UNIX. You will learn to:<\/span><\/p>\n\n\n\n

\u2022 Organise UNIX <\/span>
\u2022 Configure and manage devices. <\/span>
\u2022 Make use of the command line. <\/span>
\u2022 Add groups and users. <\/span>
\u2022 Set up a firewall.<\/span><\/p>\n\n\n\n

A Prerequisite<\/strong> \u2013 having technical knowledge of operating systems is a bonus.<\/span><\/p>\n\n\n\n

Target Audience<\/strong> \u2013 System Administrator.<\/span><\/p>\n\n\n\n

Bonuses –<\/strong><\/span><\/p>\n\n\n\n