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

Linux Interview Questions

Questions Answers Views Company eMail

Why ls -F dev/log file output indicate as = sign at end of the file name?

HCL, IBM,

5 10279

Why halt -p command needs root in ubuntu if one wants to shut it down?

1 4377

Friends, I don't have enough free space in root directory. but in home directory I have 40gb free. So I can not install anything in root directory (which occupies more space) Please suggest me If there is any possibility to increase the root directory size by minimising the home directory's.

3 5566

Is there any specific way to identify whether a data transfer done is a DMA(Direct Memory Access) transfer, thereby seeing the code snippets?

1462

what is the difference between user APIs and kernel system calls ?

NetApp,

1 8521

what are different ways the context switch happens from user to kernel space or vice-versa ?

Alcatel,

2131

Boot sequence of linux on embedded platform

NetApp,

2700

can we open microsoft word document,power point etc. on linux suse version and vise versa? if no how can we convert this?

1 2818

can we open pdf files in suse?

Intel, jetking,

3 5831

1). What are the situation in process is duplicate is linux box.? 2) Give me 5 situation to kill a process?

Perot Systems,

1 4133

What is difference between ext3 and ext4 file-system ?

TCS,

3 19992

what happens when we do insmod & rmmod in Linux Device Drivers ?

2 11661

what kind of information the linux driver modules (.ko ) files has ?

NetApp,

2 9259

what are the different ways the Linux can swich from User Space to Kernel Space & vice-versa ?

NetApp,

2 8253

what is stored in /proc ? what is significance of /proc in linux ?

NetApp,

3 10380

Un-Answered Questions { Linux }

Which is best linux for beginners?

446

what is the roles and responsibilities in linux system admin having 2yrs exp..?

3759

How to look up a Service by Port and Protocol?

1117

What are the main features of linux operating system?

438

Explain how to uninstall the libraries in linux?

482

What is bash history linux?

529

You are required to restore the file memo.ben. It was backed up in the tar file MyBackup.tar. Which command would you use to do it?

524

What are the default port numbers used by ssh,ftp,http,https,telnet,smtp,pop3,pop3s,imap,imaps?

487

1. User gaves df -h and the system get hanged. why ? 2. what is the hardlink and softlink mount ? 3. why is portmape should be started ? 4. what is nologin option 5. how to restrict users from accessing nfs ? 6. what is the difference between cpio and tar 7. what are the kernel parameters ? how to find out it ? 8. why we use sysctl.conf ? 9. if we gives init1 from multiuser runlevel, will it affect other users who already logged in to the system ? 10. what will be the available space to use after configuering raid5 with 5 disks each having 5gb spce ?

2288

Is linux user friendly?

466

What is env command in linux?

504

What is difference between comm and CMP command?

523

What are the linux distribution (operating system) names?

491

What is Syntax of any Linux command?

582

How do I check my disk space?

465

For More Un-Answered { Linux } Questions Click Here