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 6916

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 8490

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

5 12221

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 15839

tell me similarities between thread and process

Tanla Solutions,

4 34339

what is mean by kernal?

Excel,

9 13168

describe the escaping sequence characteres in unix

1 8053

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

2 4596

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

Mac, Nokia,

24 40586

What is an Environment Variable?

CTS,

4 11928

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

HCL, IBM,

3046

What is file constructing in UNIX/AIX ?

IBM, TCS,

2 8253

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 12625

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

5 10197

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 8772

Un-Answered Questions { Unix }

What is the use of grep and egrep in unix?

944

Which unix shell is best?

975

What are the three major components of any unix system?

840

How is windows different from unix?

972

What is standard unix streams ?

1076

How to display n-th line of a file in Unix?

1007

What is difference between unix and windows operating system?

1006

How can you edit a large file without opening it in unix?

901

Explain the following statement, “it is not advisable to use root as the default login.”

888

How would you display the last line of a file?

921

How to terminate a shell script if statement?

1055

What is the difference between read() and recv()?

1970

Is grep faster than awk?

1047

What is the use of the tee command?

1099

Explain system bootup in unix.

969

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