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

Unix Interview Questions

Questions Answers Views Company eMail

Explain fork() system call?

ASAS, IBM,

12 39756

Predict the output of the following program code main() { fork(); printf("Hello World!"); }

3 13576

What are the system calls used for process management?

3 7847

How can you get or set an environment variable from a program?

2 6617

How can a parent and child process communicate?

TCS,

3 18822

What is a zombie?

10 17598

What are the process states in Unix?

11 27768

What is a Daemon?

3 10235

What Happens when you execute a command?

3 13109

What is an advantage of executing a process in background?

2 17619

How do you execute one program from within another?

4 11873

What is IPC? What are the various schemes available?

5 20269

What is major difference between the Historic Unix and the new BSD release of Unix System V in terms of Memory Management?

1 4611

What is the difference between Swapping and Paging?

IBM,

4 54298

What is a Map?

2385

Un-Answered Questions { Unix }

Why kernel is known as the heart of unix os?

948

i m putting 2.6yrs fake exp in oracle/unix production support i want to know some real time issues,like tell me the challenging issue u ever faced? my project is credit card application plz help me!

13318

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

929

How do you go to a directory in unix?

843

How can I write a multi-homed server?

1605

How can we use grep command in unix?

1154

How do I run a ksh script in unix?

932

What is merge command in unix?

1455

Which command is used to restrict incoming messages?

1056

How to check the date in unix?

969

Explain different types of Unix systems.

904

Why does the sockets buffer fill up sooner than expected?

1295

Describe the term inode?

1041

Explain how to work unix commands on windows xp without installing unix o/s in pc?

924

What is the use of the command 'ls -x chapter[1-5]' ?

1167

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