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 40200

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

3 13764

What are the system calls used for process management?

3 7995

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

2 6735

How can a parent and child process communicate?

TCS,

3 18987

What is a zombie?

10 17947

What are the process states in Unix?

11 28216

What is a Daemon?

3 10373

What Happens when you execute a command?

3 13253

What is an advantage of executing a process in background?

2 17750

How do you execute one program from within another?

4 12043

What is IPC? What are the various schemes available?

5 20465

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

1 4699

What is the difference between Swapping and Paging?

IBM,

4 54488

What is a Map?

2429

Un-Answered Questions { Unix }

What are the three main components of unix architecture?

997

Is unix still relevant?

979

What is unix portability?

933

List a few significant features of unix?

1068

How to terminate a shell script if statement?

1055

Explain about Inodes?

1122

How do I get to my home directory in unix?

957

Does mac use unix?

951

What a pipe?

1002

What are the general commands in using unix os for a beginner?

1175

Is learning unix useful?

945

What is a superuser?

946

What does the “echo” command do?

1155

Is command prompt unix?

1161

What is unix structure?

958

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