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

Unix Interview Questions

Questions Answers Views Company eMail

Assume that a file’s permissions give you read and write access. What operations can you perform on the file if it is in a directory which has “r”(read) only process? What operations can you perform on the file if it is in a directory which has “x”(execute) only access?

1 6825

When the shell is reading the command line what is the difference between text enclosed between double quotes ( ” ) and text enclosed between signal quotes ( ’ )?

3 8357

The rm command removes links to file. What does this mean? How then is a file deleted from the file system?

5 11963

Assume the following files are in the working directory prompt> ls -l tasks -rw-r--r-- 1 alex student 1423 Feb 21 14:01 tasks What command can Alex use to give everyone permission to write to the file? What will the ls -l command display if he does so?

Infosys,

10 15475

tell me similarities between thread and process

Tanla Solutions,

4 34142

what is mean by kernal?

Excel,

9 12883

describe the escaping sequence characteres in unix

1 7941

System A can contact system B, but not in reverse, not firewall, not tcp wrappers, what is the reason ?

2 4502

Write a grep (or grep) command that selects the lines from a file that have exactly three characters.

Mac, Nokia,

24 39818

What is an Environment Variable?

CTS,

4 11756

If Media Server fails. What are the steps to be followed? Can anyone please reply for this question Thanks, Ganesh

HCL, IBM,

2985

What is file constructing in UNIX/AIX ?

IBM, TCS,

2 8146

How to find the version details of unix? if any application is installed in unix OS how to find the version of that application is it possilbe or not? pls let me know cmd in detail.

HCL,

5 12405

what is the use of ls -l command & what is the information it gives about user ?

5 9998

What is mean by Mac os? Why it is named as like that? Which purprose it is using? Please answer me. Advance thanks.

Excel, GeniusPort,

2 8660

Un-Answered Questions { Unix }

Does windows 10 have unix?

844

How do I grep recursively in unix?

901

How many root directories exist in unix?

960

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

972

How do I search for a grep file in unix?

803

What is Process id in unix?

955

How to print/display the first line of a file in Unix?

967

What is .sh file?

1122

List the distributions of unix.

903

Give a brief idea about representation of devices in unix.

922

What are the types of unix operating system?

861

How to remove certain lines from a file in Unix?

955

Max relax-able permission value with out giving write permission to others?

956

How do I find previous commands in unix?

1137

what is the advaantage of each user having its own copy of the shell?

2513

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