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 8042

distinguish between physical addresses and logical address?

Infosys,

3 10902

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

Alcatel, Cisco, Infosys, University Exams,

7 32715

what are processor execution levels and priorities?

Infosys,

2 11188

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

Infosys,

3 10887

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

Infosys,

2 9066

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

2 9827

What is pid?

4 10597

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 12741

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

6 12111

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

9 17829

How do you stop a running process?

7 16666

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

4 11820

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

7 10949

What is the use of pipes?

4 9482

Un-Answered Questions { Unix }

How is unix different from other operating system?

855

What is the use of finger command?

1165

What do you understand by the term kernel?

915

Explain about daemon?

971

How does unix pipe work?

921

How to write the program on full-duplex communication on bidirectional(e.g using two pipes)?

983

How do I find previous commands in unix?

1141

What language is unix written?

903

What happens when we execute a unix command?

1105

What are the bits that support the demand paging?

943

What is the unix command to confirm a remote host is alive or not?

1164

Explain critical section?

1009

What is the use of the command 'ls -x chapter[1-5]' ?

1170

What is the difference between an absolute path and a relative path in unix?

1018

What are grep patterns?

1041

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