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 6424

boot process?

2 7710

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 6054

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

HCL,

1 5273

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

Fibcom, HCL,

1 3582

What is Inode.

HCL,

2 5461

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,

3498

"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 4653

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:

2278

How do Sockets Work?

1 2554

What is with the second parameter in bind()?

1 2582

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

1 3108

When should I use shutdown()?

Wipro,

1 2675

What are Sockets?

1 2467

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

1351

Un-Answered Questions { Unix }

Which file system is used in unix?

1001

Why is unix better than windows?

950

Explain what is critical section?

979

How can you kill a process in unix?

929

What is in grep command?

1181

How do you change directories in unix?

982

What is positional parameters in unix?

1055

What is the command to find hidden files in the current directory?

1199

What is ‘the principle of locality’?

991

List some of the frequent shells used in unix along with their indicators?

914

What is the function of grep command in unix?

1191

What is unix inode?

924

How do you kill a job in unix?

1036

What is grep|sort give example?

908

What is fork()?

1049

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