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 40211

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

3 13766

What are the system calls used for process management?

3 7997

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

2 6736

How can a parent and child process communicate?

TCS,

3 18988

What is a zombie?

10 17947

What are the process states in Unix?

11 28227

What is a Daemon?

3 10375

What Happens when you execute a command?

3 13256

What is an advantage of executing a process in background?

2 17750

How do you execute one program from within another?

4 12050

What is IPC? What are the various schemes available?

5 20467

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 54495

What is a Map?

2431

Un-Answered Questions { Unix }

system choose one for me on the connect() call? Should I bind() a port number in my client program, or let the?

1613

What are the essential features of the unix operating system?

938

Can you explain a little bit about command substitution?

1118

What is delayed write in unix?

939

What is meant by u-area?

877

What is unix and shell scripting?

1008

What are the three major components of any unix system?

841

Why does it take so long to detect that the peer died?

1519

What are new features added in nfs4?

981

Enumerate some of the most commonly used network commands in unix?

1175

What's the difference between a socket and a port?

841

How do I grep recursively in unix?

963

Why is unix better than windows?

944

Explain links and symbolic links.

964

What will the following command do?

1127

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