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 40215

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 6738

How can a parent and child process communicate?

TCS,

3 18990

What is a zombie?

10 17948

What are the process states in Unix?

11 28227

What is a Daemon?

3 10377

What Happens when you execute a command?

3 13259

What is an advantage of executing a process in background?

2 17751

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 4701

What is the difference between Swapping and Paging?

IBM,

4 54497

What is a Map?

2432

Un-Answered Questions { Unix }

What is protection boundary?

1069

In what way the validity fault handler concludes?

986

In detail elaborate the system? What is driver?

2153

What is standard unix streams ?

1076

How does the kernel differentiate device files and ordinary files?

1030

What is the use of unix?

996

What is hardlink and softlink in unix?

984

What does the swapping system do if it identifies the illegal page for swapping?

1057

Enlist some filename manipulation commands in unix.

1162

What are new features added in nfs4?

981

What is the full form unix?

976

What is inode in unix operating system?

943

Which unix command to make a new directory?

1152

What does #!/ Bin sh do?

1069

Explain command to display different lines that are found when compare two files?

1183

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