Linux Related Interview/Other Questions

Any one example of uninteruptable sleeping process?

Did you ever write any inerface files / profile file to support unix environment setup ?

Did you work with linux? What flavors and versions?

Diff b/w c-shell and born-shell ?

Difference between tcp and udp ?

Display the disk usage of file sizes under each directory in current directory ?

Find out what file systems supported by kernel?

Have you ever got warning message from unix admin that file system running out of space or not enough disk space?what will you do?

How can you find configuration on linux?

How can you see all mounted drives?

How do display error messages instantly when command fails?

How do find all failed login attempts via ssh?

How do find hard disk revolutions speed?

How do you configure linux system as a router?

How do you extract files from iso cd images in linux?

How do you find out the server processes running?

How do you find remote machine operating system and version?

How do you port scaning with netcat command?

How do you rate yourself in unix(if 0 is novice and 10 is sys admin)?

How do you read ext2/3 file system in windows?

How do you see complete configuration in your system?

How does the boot process[init levels] work on linux? How is it different from solaris?

How is "to run even after user logs out"

How is the possible the "last 10 files present in the current directory and stores them in the file list".

How list the open files?

How many limitations of under directories in ext2/3 linux file system?

How shared memory are accessed if we have two processors trying to acquire the same region.

How to add linux user to group?

How to check all open ports on linux machine and block unsed ports?

How to configure ftp server on redhat linux?

How to configure http server on red hat linux 5.0?

How to configure sendmail server on red hat linux version 4 and what and all we require?

How to create a ftp user on redhat linux 5.0?

How to create a new file command

How to create samba server in fedora 9 linux ?

How to create samba server in fedora linux 9 ?

How to give the root permission to users?

How to hide the ftp version?

How to install linux os? step by step

How to run the boot loader in the linux ?

How to schedule cron backup to run on 4th Saturday of month??

How to see unallocated hard disk space on linux

How to send automated email to a set of people at fixed time ?

How will retrieves incoming mails from different web sites

How will you execute a java program inside a kornshell script?

How will you make a daily updates with cron daily?

How would you find whether a remote server is up or not?

How you use the iptable firewall to restrict ssh,telnet,ftp

How you will uncompress the file?

I want to change runlevel but the users shall not be disturbed? how?

If root user forget the password how to change it?

In Linux, what are two subtle differences in using the more and the pg commands?

In unix how to change old name to new name

Linux system its not booting up its showing grub error what i need to do?

List all the files beginning with a

My machine is running half duplex mode how to change half duplex to full duplex?

Script is like x=10; y=20; [$x-ne$y]; echo $ please give me output.

Set the display automatically for the current new user ?

Tell me command for" to create more than one name to a file".

Tell me some of the linux hotkeys do you know?

What are rpm?s, what do they offer?

What are softirq's and how many major numbers be allocated in the linux kernel(2.4) ?

What are the advantages and disadvantages of script v/s compiled program?

What are the backup utilities on red hat linux 5.0?

What are the internal and external command in linux?

What are the signals we have in linux?

What command can you use to review boot messages?

What does the following command line produce? Explain each aspect of this line. $ (date ; ps -ef | awk {print $1}' | sort | uniq | wc -l ) >> activity. log

What does the top command display?

What file should you examine to determine the defined runlevels for your system?

What is "ls* " is run options are 1) x 2).x 3) hidden 4) no display tell exact answer.

What is a superblock ?

What is bourne shell.

What is bus trap.

What is command like " #(cd unixos; pwd) " tell me output

What is crondtab daemon?

What is cups and how to configure?

What is difference between inetd and xinetd

What is initrd image?

What is iptabe on redhat linux?

What is jumbi process?

What is kernel compiling?

What is kernel parameters?

What is lilo?

What is major and minor?

What is mean by system calls

What is nis server

What is quota-v

What is samba, what is configuration file, how it will work?

What is segmentation fault?

What is soft mount and hard mount? I have to make permanent nfs mount permanent what shall i do?

What is sudo on linux?

What is symbolic link in unix ?

What is the command to check network interfaces in our system? How to set etho to 10 full duplex speed?

What is the command to make a process to run in the background from foreground?

What is the command to print script arguments

What is the complete name of the default configuration file for lilo?

What is the diff b/w ext2 and ext3?

What is the diff b/w mutex and semaphore?

What is the difference between a process task and threads and what are the things that are acquired by the child process from the parent process

What is the difference between an argument and an option/switch?

What is the difference between fork and thread ? And parent and child process in fork system call?

What is the difference between fork() & exec()

What is the difference between home directory and working directory?

What is the difference between semaphore, mutex & spinlock?

What is the difference between redhat linux and suse linux ?

What is the minimum number of partitions you need to install linux?

What is the most graceful way to get to run level single user mode?

What is the name and path of the main system log?

What is the standard output in a file as well as display it on the terminal options like a)pr b) tail c) tee d)nl

What is the uid and gid of root user? Can a normal user can change the ownership of a file? What is the command to change ownership of a file?

What is the use of proc structure?

What is the use of thread over process?

What is trusted/untrusted operating system?

What is user mode & kernel mode?

What restrict telnet for root itself but allow for other user

What text filter can you use to display a binary file in octal numbers?

What utility can you use to automate rotation of logs?

What will happen when we invoke a system call and say with an example of invoking a system call ?read? For a device?

What would you do when all the processess hangs and there is no other option in unix?

What you know about tar command?

When is it better to use the more command rather than cat command?

When zombie process fully cleared?

Where is standard output usually directed?

Which directory is closer to the top of the file system tree, parent directory or current directory?

Which distro you prefer? Why?

Which linux distros do you have experience with?

Which port is associated with ttys0?

Which priority has the process? how do you view?

Which tool would you use to update debian / slackware / redhat / mandrake / suse ?

Who are the author of linux operation system?

Who owns the data dictionary?

Why do we have serial and parallel interface, which one was faster and why and when we should go for this interface.

Why do you want to join this company ?

Why have you choosen such a combination of products?

Working in linux/unix platform, if any command dose not work, say # ls reports as command not found. What to do?

Write a command to find all of the files which have been accessed within the last 30 days.

You want to create a compressed backup of the users' home directories. What utility should you use?