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

Unix Interview Questions

Questions Answers Views Company eMail

what is the functionality of kernel in unix architecture?

12 33257

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 9008

What is RC (return code)? What is useful for? Which are the common values?

Accenture,

1 8190

What does "bulk loading of a table" mean? Can you describe advantages or disadvantages of using these features?

Accenture,

2 12981

What is a "parameter card" and what is useful for?

Accenture,

1 10280

Suppose you have a scheduling chain where the process 1 is a predecessor of the process 2 and both of them are scheduled every Monday at 8.00pm. Will I find execution log of process 1 every Tuesday morning? And what about the other one? Why?

Accenture, IBM,

1 5244

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

IBM,

12 23470

What is the number of the masked code ee@?

Accenture, Amazon, Amdocs,

2 33062

What is difference between SSH V1 and SSH V2? What are drawbacks of SSH V2?

Wipro,

1 11923

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

Polaris,

11 21451

what is the difference between KILL and KILL -9?

Informatica, Nutanix,

5 28586

What are the general Commands in using Unix OS for a beginner? how many commands you know in that?

2 7078

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

IBM,

4 36899

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

IBM,

12 24831

how to use grep command to list find the records of a file containg 10 different strings

IBM,

5 13840

Un-Answered Questions { Unix }

Whats the difference between select() and poll()?

1636

Does cp command overwrite files?

1192

Explain what is standard unix streams ?

972

How to protect a process from others to kill?

949

Describe the zip/unzip command using gzip.

1155

How does unix file system work?

989

How do I grep multiple patterns in unix?

1009

What is a superuser?

938

How to find other end of unix socket connection?

880

Suppose I have one column with data smithjohnmichale the o/p should be smith,john, michale how we do in unix?

864

What is the home directory in unix?

927

Explain similarities between thread and process?

974

What a pipe?

996

What are unix options?

904

Explain ‘system calls’ with respect to unix commands?

1091

For More Un-Answered { Unix } Questions Click Here