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 6979

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 8606

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

5 12459

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 16156

tell me similarities between thread and process

Tanla Solutions,

4 34524

what is mean by kernal?

Excel,

9 13405

describe the escaping sequence characteres in unix

1 8123

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

2 4683

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

Mac, Nokia,

24 41213

What is an Environment Variable?

CTS,

4 12095

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

HCL, IBM,

3095

What is file constructing in UNIX/AIX ?

IBM, TCS,

2 8351

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 12804

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

5 10386

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 8877

Un-Answered Questions { Unix }

What do chown command do?

1257

What does the md command do?

1199

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

1266

Describe the term inode?

1172

What are positional parameters in unix?

1080

Is windows unix like?

1060

how to kernel protected memory?

2423

What are shell variables?

978

What is a filter in unix? Give an example.

970

How do unix sockets work?

899

What is the best free unix based os?

988

What are the criteria for choosing a process for swapping out of the memory to the swap device?

1064

What does awk stand for?

1143

Explain the initial process sequence while the system boots up?

1016

What is the condition required for dead lock in unix system?

1021

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