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

Unix Interview Questions

Questions Answers Views Company eMail

How do I get the port number for a given service?

1 1862

How do I properly close a socket?

1 1929

What is the difference between close() and shutdown()?

1 1974

Explain the TIME_WAIT state.

1 1770

How can I put a timeout on connect()?

1 1706

Why does the sockets buffer fill up sooner than expected?

980

How often should I re-transmit un-acknowleged messages?

1 1420

of the socket? Does doing a connect() call affect the receive behaviour?

1 1608

When should I use UDP instead of TCP?

1 1549

How can I read only one character at a time?

1 1633

What is the difference between SO_REUSEADDR and SO_REUSEPORT?

1340

How do I get my server to find out the clients address / host- name?

1 1453

What exactly does SO_KEEPALIVE do?

1 1435

What exactly does SO_REUSEADDR do?

1 1628

How come I get address already in use from bind()?

1 1490

Un-Answered Questions { Unix }

Define the term directory?

511

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

499

What is in grep command?

633

Is windows built on unix?

500

What is the use of egrep command in unix?

611

What does pipe () return?

579

How to print/display the last line of a file in Unix?

536

Explain linking across directories?

528

How can we use grep command in unix?

602

Which command is used to delete all files in the current directory and all its sub-directories?

649

How to change the password in unix operating system?

479

What is ctrl d?

580

Does ios use unix?

495

What is pipe command in unix?

654

What are the advantages of unix operating system?

487

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