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Unix Commands Interview Questions
Questions Answers Views Company eMail

what will be the output of ls ~/..

ABC,

27 19352

what is exact definition of operating system?

13 12701

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 12592

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

7 9205

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

CGI,

27 21741

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

RBS,

3 43992

how to find largest file?

HCL, Microsoft, Thomson Reuters,

14 20566

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

2 15185

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

Perot Systems,

3 16272

how to change a normal file into hidden file

3 7896

what is difference between unix and linux?

IBM, Shell, Wipro,

6 10943

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 4711

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 5845

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

5 8749

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 10075


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Un-Answered Questions { Unix Commands }

How do you grep a case insensitive?

158


What does the command '$ls | wc –l > file1' do?

210


Describe the usage and functionality of the command rm –r * in unix?

313


What is rmdir command?

142


Why is grep called grep?

177






What does grep v grep do?

169


What do know about tee command?

191


What is the nmap command?

161


Name the unix command to find how many days the server has been up.

191


Can you enlist some commonly used network commands?

189


What is unix command?

165


What are filter commands in unix?

175


What does pipe () return?

173


What is merge command in unix?

166


hw will u use awk in replacing cahrs and files

2272