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 6408

boot process?

2 7695

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 5267

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

Fibcom, HCL,

1 3571

What is Inode.

HCL,

2 5447

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,

3494

"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 4644

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:

2273

How do Sockets Work?

1 2541

What is with the second parameter in bind()?

1 2574

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

1 3102

When should I use shutdown()?

Wipro,

1 2661

What are Sockets?

1 2459

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

1348

Un-Answered Questions { Unix }

What is a unix shell?

988

Explain about daemon?

1030

Is unix free?

948

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

867

What is a directory?

964

What a pipe?

1002

why unix commands simpler rather than complex task

4421

How do I run a shell script in unix?

1010

How do you go to a directory in unix?

891

Are sockets files?

878

What do chown command do?

1196

What are file commands?

1236

What are the pros/cons of select(), non-blocking I/O and SIGIO?

1365

What is the difference between unix and windows operating system?

983

Describe the term directory?

1443

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