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

Unix Commands Interview Questions

Questions Answers Views Company eMail

what will be the output of ls ~/..

ABC,

27 31470

what is exact definition of operating system?

13 20062

What Is the command to change a file's creation time. means one file is created at the time 15:19 then time should br changed to 14:14

3i Infotech, IBM,

8 17201

How do you find which version and name of unix you are using at the command prompt?

7 13487

Is there any command in Unix, other than:ls, to list the files in a directory? The answer will be highly appreciated...

CGI,

27 34832

What is the difference between AWK and SED commands? Plz give example and explain...

RBS,

3 46993

how to find largest file?

HCL, Microsoft, Thomson Reuters,

14 29316

What is "type" command in unix?what is the functionality??

2 17047

How to know a process is a zombie or orphan process?

Perot Systems,

3 18966

how to change a normal file into hidden file

3 11143

what is difference between unix and linux?

IBM, Shell, Wipro,

6 15636

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 6905

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 8467

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

5 12186

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 15784

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Un-Answered Questions { Unix Commands }

why metadb requires a seperate slice to create Solaris volume manager

3156

Name the various commands that are used for the user information in unix.

1081

Explain how to use grep command to list find the records of a file containing 10 different strings?

1067

Explain command to show the space allocation of files?

1120

What does pipe () return?

1071

Enumerate some of the most commonly used network commands in unix?

1162

Enlist some filename manipulation commands in unix.

1158

Which command should you use to find the remaining disk space in unix server?

1304

What is the use of finger command?

1207

How do you grep recursively?

1105

What do chown command do?

1183

Write a command that will allow a unix system to shut down in 15 minutes, after which it will perform a reboot.

1236

What does touch command do in unix?

1417

What is in grep command?

1164

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

1217

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