Thursday, August 7, 2008

Top 100 Unix Questions Asked in Actual Interviews


1..what is kernel? 2. what is the difference between kernel and microkernel? 3. what is the difference between unix and Linux? 4. what is relational database,hierarchal database. and network database? their difference?
http://www.coolinterview.com/interview/7436

Construct pipes to execute the following jobs.
http://www.coolinterview.com/interview/7476

Explain the steps that a shell follows while processing a command.
http://www.coolinterview.com/interview/7474

What is the difference between soft link and hard link in unix operating system ?
http://www.coolinterview.com/interview/7461

Unix command to concatenate (attach) two strings?
http://www.coolinterview.com/interview/10833

How to read error messages in /var/adm/messages when system is not booting.
http://www.coolinterview.com/interview/10827

How to find some partuicular lines in unix Vi editor which starts with a paricular word and end with another particular word?? For ex - There are 10 lines in the editor and only 4 lines start with the word APPLE and end with the word MANGO.Now how to find out these particular lines in Unix .
http://www.coolinterview.com/interview/10826

Where is kernel located in unix?
http://www.coolinterview.com/interview/10825

How is the command �$cat file2 � different from �$cat >file2
http://www.coolinterview.com/interview/7475

Which command is used to delete all files in the current directory and all its sub-directories?
http://www.coolinterview.com/interview/7473

How many prompts are available in a UNIX system?
http://www.coolinterview.com/interview/7471

How does the kernel differentiate device files and ordinary files?
http://www.coolinterview.com/interview/7470

How to switch to a super user status to gain privileges?
http://www.coolinterview.com/interview/7469

What are shell variables?
http://www.coolinterview.com/interview/7468

What is redirection?
http://www.coolinterview.com/interview/7467

How to terminate a process which is running and the specialty on command kill 0?
http://www.coolinterview.com/interview/7466

What is a pipe and give an example?
http://www.coolinterview.com/interview/7465

Explain the following commands.
http://www.coolinterview.com/interview/7464

How to sfind free space in unix/linux
http://www.coolinterview.com/interview/7463

What are the difference between Daemons in Unix and service processes in Windows?
http://www.coolinterview.com/interview/7462

What is the unix command used for giving or changing the permissions for files and folders?
http://www.coolinterview.com/interview/7460

What is difference between lilo and stub?
http://www.coolinterview.com/interview/7459

What does the following command do? cp $ABC/$SUP/xyz.tct .;
http://www.coolinterview.com/interview/7458

Unix command to concatenate (attach) two strings?
http://www.coolinterview.com/interview/7457

Unix command to concatenate (attach) two strings?
http://www.coolinterview.com/interview/7456

How do you connect to or query Oracle database from a UNIX platform.?
http://www.coolinterview.com/interview/7455

Explain the UNIX Kernel.
http://www.coolinterview.com/interview/7454

What is Concurrency? Explain with example Deadlock and Starvation.
http://www.coolinterview.com/interview/7453

What are your solution strategies for “Dining Philosophers Problem�?
http://www.coolinterview.com/interview/7452

Explain Memory Partitioning, Paging, Segmentation.
http://www.coolinterview.com/interview/7451

Explain Scheduling.
http://www.coolinterview.com/interview/7450

What is Semaphore?
http://www.coolinterview.com/interview/7449

Explain the following file systems: NTFS, Macintosh (HPFS), and FAT.
http://www.coolinterview.com/interview/7448

What are the different process states?
http://www.coolinterview.com/interview/7447

What is Marshalling?
http://www.coolinterview.com/interview/7446

Define and explain COM?
http://www.coolinterview.com/interview/7445

Difference - Loading and Linking?
http://www.coolinterview.com/interview/7444

Do you have idea about “Shell Job Control”?
http://www.coolinterview.com/interview/7443

How can you come to the home directory?
http://www.coolinterview.com/interview/7442

What is Redirection?
http://www.coolinterview.com/interview/7440

Linux General questions
http://www.coolinterview.com/interview/7439

How do i partition the disk under red hat linux?
http://www.coolinterview.com/interview/7438

Exlain Stickybit?
http://www.coolinterview.com/interview/7437

How to read error messages in /var/adm/messages when system is not booting.
http://www.coolinterview.com/interview/7435

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