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 is ls -ltd?

HCL,

5 16078

what is the command to print last 8 lines of any text file.

10 15177

How to install scsi driver in unix? give me explanation clearly?

HCL, TCS,

1 8008

Sorry to all Technical person for mistake of Question. Now i am post currect question Why copied file permission is changed in destination. When i give all permission i.e 777 to file and copy that to other location in destination the permission is 755. But if give permission 555 in destination that file permission is 555 and if give permission 444 to file after copy in destination the file permission is 444. These all are happening in normal user. How the umask value is calculate here really i am not understand. Please write the proper answer. Thanks in Advance

TCS,

3 9157

How i'll delete a particular line from the file? Please give answer as soon as possible. Thanks in advance.

IBM,

12 23850

How to display a file name which has zero bytes in size.

Polaris,

11 21868

what is the difference between KILL and KILL -9?

Informatica, Nutanix,

5 28834

what is the difference between SED and GREP ? Which one is more better and why?

IBM,

4 37079

how to find the 51th record of a file containing 100 records in unix.

IBM,

12 25401

If JFS file system is 100% full how we can increase the file system ?

3 8179

What is shrinking file system in AIX where it actually resides?

2486

when we installing aix os the ssh installed default?

2 5571

Where LOG fiels resides in AIX and pls tel me how to remove the log file

Vestas,

6 11242

write grep commands to select the lines that have exactly two characters

PSI Data Systems,

8 25397

How to check the flavor of UNIX?

HCL, Syntel,

8 26961

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Un-Answered Questions { Unix Commands }

What do know about tee command?

1221

How do you repeat a command in terminal?

1290

What is the use of cut command in unix?

1427

Which command can you use to find the currently running process in unix server?

1165

Who invented grep?

1211

Explain ‘system calls’ with respect to unix commands?

1153

What do know about tee command and its usage?

1248

What is $0 bash?

1255

How does the system know where one command ends and another begins?

2313

What will the following command do?

1174

What do chmod, chown, chgrp commands do?

1349

What is “chmod” command?

1241

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

1299

Write a command that will find all text files in a directory such that it does not contain the word "amazing" in any form (that is, it must include the words amazing, amazing, or amazing)?

1626

Which command is used to restrict incoming messages?

1147

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