Unix Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Unix Interview Questions

Questions Answers Views Company eMail

what is virtual machine?

Infosys,

2 8038

distinguish between physical addresses and logical address?

Infosys,

3 10889

distinguish between multi-tasking,multi-user,multi- processing and time sharing?

Alcatel, Cisco, Infosys, University Exams,

7 32695

what are processor execution levels and priorities?

Infosys,

2 11181

what do you understand by 'unix is a portable os'?

Infosys,

3 10879

what do you understand bythe term 'de-mountable volumes'?

Infosys,

2 9058

How do you copy a directory with many files and folders into another directory?

2 9819

What is pid?

4 10584

Suppose 1000 processes are running on the system out of those if you have to show only certain process ids which command will you use?

5 12728

What is the syntax of grep command and what is its use?

6 12096

How do you move a process which is running background to foreground?

9 17806

How do you stop a running process?

7 16649

What is the procedure of "at" and crontab" commands?

4 11804

Which command will you use to change the permissions on file?

7 10926

What is the use of pipes?

4 9466

Un-Answered Questions { Unix }

What is $# in unix?

924

Who invented grep?

1123

How to find out what processes are running in the background in unix?

923

In detail elaborate the system? What is driver?

2110

what is the time for incident, problem and change management tickets?

2887

Explain similarities between thread and process?

940

Explain the terms ‘system calls’ and ‘library functions’ with respect to unix commands?

1169

What is the window of the working set of a process?

1023

What is ‘the principle of locality’?

928

What is pipe in unix example?

922

What is the fork() system call?

897

Name the unix command to find how many days the server has been up.

1129

What is i-node numbers?

1090

What are the criteria for choosing a process for swapping into memory from the swap device?

968

How to create files in unix?

927

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