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 32771

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 8879

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

Accenture,

1 8091

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

Accenture,

2 12859

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

Accenture,

1 10154

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 5160

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

IBM,

12 23041

What is the number of the masked code ee@?

Accenture, Amazon, Amdocs,

2 32936

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

Wipro,

1 11823

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

Polaris,

11 21045

what is the difference between KILL and KILL -9?

Informatica, Nutanix,

5 28314

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

2 6933

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

IBM,

4 36708

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

IBM,

12 24388

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

IBM,

5 13614

Un-Answered Questions { Unix }

How is the command '$cat file2 ' different from '$cat >file2 and >> redirection operators ?

1250

Can multiple clients connect to same socket?

847

What is grep and how do you use it?

1049

What is the home directory in unix?

879

. Using sed and grep, write a command which lists files and directories with following properties: (i) created in 1999 (ii) with user's as owner and group

2622

How do I use nslookup?

1036

What is a socket file?

834

What is pipe command in unix?

1228

Which ipc is the fastest in unix?

921

How to get the last word from a line in Unix file?

904

Explain the architectural differences between user-space threads, and kernel-supported threads?

912

Who command in unix operating system?

1084

What is the use of cut command in unix?

1293

What does #!/ Bin sh do?

1016

Explain what is standard unix streams ?

921

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