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Unix Interview Questions
Questions Answers Views Company eMail

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

 4 15241

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

Informatica,

3 10560

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

Infosys,

2 19074

Which RAID Levels supported by LVM?

5 11139

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

 5 7302

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

TCS,

12 19531

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

 2159

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

DOEACC, Virtusa,

1 4474

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

NIIT,

2 6166

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

 6 9276

how many internal commands is there in UNIX?

TCS, Virtusa,

3 15223

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 10952

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

HCL,

1 4750

What is semaphone?

HCL,

5 17724

. 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

2203

Un-Answered Questions { Unix }

How do I remove 30 days old files in unix?

503

What is the role of the kernel in unix?

575

What does the “echo” command do?

626

What are the events done by the Kernel after a process is being swapped out from the main memory?

1980

what is wrong with this interactive shell script?

499




How does the kernel differentiate device files and ordinary files?

562

What is the difference between a single dot and double dot in unix?

716

What is command substitution?

627

Explain the different kinds of threads?

612

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:

1768

What is awk sed unix?

491

How to change the password in unix operating system?

494

Why unix terminals are called dummy terminals?

546

Is it possible to create new a file system in UNIX?

639

Name the key features of the bourne shell.

498

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