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

Unix Interview Questions

Questions Answers Views Company eMail

solaris Run level?

3 6404

boot process?

2 7688

Assume that there are two different filesystems as /abc and /xyz. There is a file A under filesystem /abc which has to be linked to filesystem /xyz. Which link will you use - soft link or hard link? why?

Accenture,

1 6049

how to create tree of processes. one parent and 3 childs.

HCL,

1 5265

How to know whether the message queue is empty or not.

Fibcom, HCL,

1 3570

What is Inode.

HCL,

2 5446

I have one flat file,in this file how many columns are there i don't know,but one ename column is there , just i want to cut the surname, so how to cut the surname, any one know the answer please guide me ? ename ----- tapan kumar nayak bala murugan kutal chkrobarthy biswo My output is like that OUTPUT ------ nayak murugan chakrobarthy biswo

Cap Gemini,

3493

"ls" command is showing all the subdirectoary and files which are present in the current directoary, i want to cut only directoary name. How to cut only name ?

Cap Gemini,

2 4642

When i run a programm of orphan process. Instead of getting child's parent (ppid)=1 ..i get 1400 and it varies as per system. How can i findthe right soluion??? My pgm: #include # include int main() { int pid; pid=fork(); if(pid < 0) {exit(-1);} else if(pid==0) { printf("Child Process is Sleeping ..."); sleep(10); printf("Orphan Child's Parent ID : %u ",getppid()); } else { printf("Parent Process Completed ... %u ",getpid()); exit(0); } return 0; } Output:

2272

How do Sockets Work?

1 2538

What is with the second parameter in bind()?

1 2574

If bind() fails, what should I do with the socket descriptor?

1 3100

When should I use shutdown()?

Wipro,

1 2661

What are Sockets?

1 2455

How can I tell when a socket is closed on the other end?

1348

Un-Answered Questions { Unix }

What is difference between socket () and serversocket () class?

865

Is there any method to erase all files in the current directory, along with its all sub-directories, by using only one command?

1232

Explain c program to implement the unix or linux command to implement ls -l >output.txt?

827

Is unix portable?

1002

How do I find my unix os version?

943

How to remove the first line/header from a file in Unix?

1062

Define the term directory?

976

What are drawbacks of ssh v2?

983

How to change the directory in unix?

1005

What is the full form of ipc?

1136

How to create a blank file in unix?

982

Which language is used in unix?

916

What is pipe in unix example?

975

Explain mount and unmount command.

1226

Explain the steps that a shell follows while processing a command.

1237

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