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

Unix Interview Questions

Questions Answers Views Company eMail

why unix operating system provides more security than other operating systems?

4 17074

why unix commands can be divided into internal and external commands?

Informatica,

3 12059

How to write the program on full-duplex communication on biderctional(e.g using two pipes)

Infosys,

2 20165

Which RAID Levels supported by LVM?

5 13089

Where can I get the free download of Unix by Yeswant Kanetkar?

5 8987

can we use cat command as an editor ..???

TCS,

12 23650

Need a Code snippet about how sharing is happening between Parent and Child threads in OS?

2552

virtual terminal protocol is an example of which layer and works with which layer?

DOEACC, Virtusa,

1 5296

How can we "forked" process in UNIX? How then recognize in any of the branches we?

NIIT,

2 7217

How does one process we can start an executable file? How to get the PID process, which we started?

6 11445

how many internal commands is there in UNIX?

TCS, Virtusa,

3 16782

How to set sticky bit, or it have any seperate directory to create sticky bit in sunfir servers. Please help me , i don't no the exact answer?

HCL, Wipro,

4 12520

how to create a file system quota in HP-UX?

HCL,

1 5503

What is semaphone?

HCL,

5 20053

. Using sed and grep, write a command which lists files and directories with following properties: (i) created in 1999 (ii) with user's as owner and group

2663

Un-Answered Questions { Unix }

What are grep patterns?

1080

What is difference between ssh v1 and ssh v2?

928

What is difference between find and grep in unix?

944

Differentiate cmp command from diff command.

1166

What are a shell in unix and its types?

959

Does windows use unix?

912

What's the difference between a socket and a port?

831

Explain what is the process id for kernel process?

988

What are the features and benefits of unix?

921

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:

2265

How do I show hidden files in unix?

898

What is source unix?

903

what is output mkvg pvname

2195

What is the nmap command?

1178

Explain how do you create special files like named pipes and device files?

938

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