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Unix Interview Questions
Questions Answers Views Company eMail

In this command sqlplus -s username/password what is -S and what's the use..???

TCS,

1 4213

In this command sqlplus -s username/password what is -S and what's the use..???

IIIP, TCS,

1 5889

What is output of the following?

ABC,

1 4890

Pipes support half duplex communication. But if we want full-duplex communications we should use two pipes between two processes. Is such situation can leads to deadlock? Write two scenarios that could leads to deadlock in such situations?

Vector India,

1 4849

Why does the server parent need to close the connected socket returns from accept in a concurrent TCP server? What may happen if it does not do so?

1 3621

Consider a TCP echo client which blocks on fgets which read input from standard input. If now the corresponding server process crashes, what will client TCP kernel receive? Can the client process receive that? Why or why not? How you solve the above problem?

1 4604

What will happens when we don't call of bind()and listen() in a normal echo server ? Q.33 (b). What are the purposes of the three file descriptors on which the syslogd daemon listens and does I/O multiplexing?

1 4246

Explain how and when a DNS request is solved when a user tries to surf to the site www.abcdeg.in .Assume the user machine uses a local name server and sits on another network other than www.abcdef.in.

1 5055

How to add content of one file into another file at the beginning

12 18558

how to check a file system type

Wipro,

7 14810

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!

Sapient,

13374

How to replace the exact word in vi editor?? suppose a file contains words like amaze,amazed,amazement in some of the line.But i want to replace only 'amaze' with delight but don't wanna replace amazed or amazement. thanks

Polaris, Tech Mahindra,

6 12973

What does mkdir up2date; touch outdated up2date do?

2 6719

i am prepairing for 2+ yrs exp in oracle/unix production support,can u tell me which type issue comes in server plz help

Crimson Logic,

7090

how can we create the script in crontab at mid night on sunday,satuarday,fiday 0n monyh october,november,january? please give me answer if anybody knows ? because on important purpose.

2 5059


Un-Answered Questions { Unix }

What scheme does the Kernel in Unix System V follow while choosing a swap device among the multiple swap devices?

1065


What are states that the page can be in, after causing a page fault?

1024


What do you mean by the protection fault?

997


What are hidden files in unix?

998


Why was unix invented?

866


How do you make programs portable on unix and dos under such circumstances?

1016


Explain what is critical section?

972


What are the three major components of any unix system?

840


How is a socket created?

919


What are the criteria for choosing a process for swapping out of the memory to the swap device?

1024


What does the command ' $who | sort –logfile > newfile' do?

1280


What does $? Mean in unix?

974


Give the command for finding the current date.

1118


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

981


What is command substitution?

1376