Basic Linux Interview Questions and Answers – Part II

Continuing the Interview Series, we are giving 10 Questions here, in this article. These questions and the questions in the future articles doesn’t necessarily means they were asked in any interview. We are presenting you an interactive learning platform through these kind of posts, which surely will be helpful.

Basic Linux  Interview Questions
Basic Linux Interview Questions – 2

Upon the analysis of comments in different forums on last article 11 Basic Linux Interview Questions of this series, it is important to mention here that to bring up a quality article to our readers. We give our time and money, and in return what we expect from you? Nothing. If you can’t praise our work, please don’t demoralize us from your negative comments.

If you find nothing new in a post, don’t forget that for someone it was helpful, and for that he/she was thankful. We can’t make everyone happy in each of our article. Hope you readers would take pain to understand this.

Q.1: Which command is used to record a user login session in a file?
  1. macro
  2. read
  3. script
  4. record
  5. sessionrecord
Answer : The ‘script’ command is used to record a user’s login session in a file. Script command can be implemented in a shell script or can directly be used in terminal. Here is an example which records everything between script and exit.

Let’s record the user’s login session with script command as shown.

[root@tecmint ~]# script my-session-record.txt

Script started, file is my-session-record.txt

The content of log file ‘my-session-record.txt’ can be views as:

[root@tecmint ~]# nano my-session-record.txt

script started on Friday 22 November 2013 08:19:01 PM IST
[root@tecmint ~]# ls
^[[0m^[[01;34mBinary^[[0m ^[[01;34mDocuments^[[0m ^[[01;34mMusic^[[0m $
^[[01;34mDesktop^[[0m ^[[01;34mDownloads^[[0m my-session-record.txt ^[[01;34$
Q.2: The kernel log message can be viewed using which of the following command?
  1. dmesg
  2. kernel
  3. ls -i
  4. uname
  5. None of the above
Answer : The kernel log message can be viewed by executing ‘dmesg’ command. In the list kernel is not a valid Linux command, ‘ls -i’ lists the file with inode within the working directory and ‘uname’ command shows os.
[root@tecmint ~]# dmesg

Initializing cgroup subsys cpuset
Initializing cgroup subsys cpu
Linux version 2.6.32-279.el6.i686 ([email protected]) (gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) ) #1 SMP Fri Jun 22 10:59:55 UTC 2012
KERNEL supported cpus:
  Intel GenuineIntel
  AMD AuthenticAMD
  NSC Geode by NSC
  Cyrix CyrixInstead
  Centaur CentaurHauls
  Transmeta GenuineTMx86
  Transmeta TransmetaCPU
Disabled fast string operations
BIOS-provided physical RAM map:
Q.3: Which command is used to display the release of Linux Kernel?
  1. uname -v
  2. uname -r
  3. uname -m
  4. uname -n
  5. uname -o
Answer : The command ‘uname -r’ display the kernel release information. The switch ‘-v’ , ‘-m’ , ‘-n’ , ‘o’ display kernel version, machine hardware name, network node, hostname and operating system, respectively.
[root@tecmint ~]# uname -r

Q.4: Which command is used to identify the types of file?
  1. type
  2. info
  3. file
  4. which
  5. ls
Answer : The ‘file’ command is used to identify the types of file. The syntax is ‘file [option] File_name’.
[root@tecmint ~]# file wtop

wtop: POSIX shell script text executable
Q.5: Which command locate the binary, source and man page of a command?
Answer : The ‘whereis’ command comes to rescue here. The ‘whereis’ command locate the binary, source, and manual page files for a command.
[root@tecmint ~]# whereis /usr/bin/ftp

ftp: /usr/bin/ftp /usr/share/man/man1/ftp.1.gz
Q.6: When a user login, which files are called for user profile, by default??
Answer : The ‘.profile’ and ‘.bashrc’ present under home directory are called for user profile by default.
[root@tecmint ~]# ls -al
-rw-r--r--.  1 tecmint     tecmint            176 May 11  2012 .bash_profile
-rw-r--r--.  1 tecmint     tecmint            124 May 11  2012 .bashrc
Q.7: The ‘resolv.conf’ file is a configuration file for?
Answer : The ‘/etc/resolv.conf’ is the configuration file for DNS at client side.
[root@tecmint ~]# cat /etc/resolv.conf

Q.8: Which command is used to create soft link of a file?
  1. ln
  2. ln -s
  3. link
  4. link -soft
  5. None of the above
Answer : The ‘ln -s’ command is used to create soft link of a file in Linux Environment.
[root@tecmint ~]# ln -s /etc/httpd/conf/httpd.conf httpd.original.conf
Q.9: The command ‘pwd’ is an alias of command ‘passwd’ in Linux?
Answer : No! The command ‘pwd’ is not an alias of command ‘passwd’ by default. ‘pwd’ stands for ‘print working directory’, which shows current directory and ‘passwd is used to change the password of user account in Linux.
[root@tecmint ~]# pwd

[root@tecmint ~]# passwd
Changing password for user root.
New password:
Retype new password:
Q.10: How will you check pci devices vendor and version on a Linux?
Answer : The Linux command ‘lspci’ comes to rescue here.
[root@tecmint ~]# lspci

00:00.0 Host bridge: Intel Corporation 5000P Chipset Memory Controller Hub (rev b1)
00:02.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 2-3 (rev b1)
00:04.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 4-5 (rev b1)
00:06.0 PCI bridge: Intel Corporation 5000 Series Chipset PCI Express x8 Port 6-7 (rev b1)
00:08.0 System peripheral: Intel Corporation 5000 Series Chipset DMA Engine (rev b1)

That’s all for now. I hope these above questions might be very helpful to you. In our next weekend we again come-up with some new set of questions. Till then stay healthy, tuned and connected to Tecmint.

A Passionate GNU/Linux Enthusiast and Software Developer with over a decade in the field of Linux and Open Source technologies.

Each tutorial at TecMint is created by a team of experienced Linux system administrators so that it meets our high-quality standards.

Join the TecMint Weekly Newsletter (More Than 156,129 Linux Enthusiasts Have Subscribed)
Was this article helpful? Please add a comment or buy me a coffee to show your appreciation.

39 thoughts on “Basic Linux Interview Questions and Answers – Part II”

  1. Great Work Avishek / Ravi,

    But few questions are not sufficient to cover the interview on Linux.
    I hope you can create important questions soon for each topic of Linux.

  2. Nice to have tutorials for Linux beginners- I hope that people are able to see how easy Linux really is- especially for everyday web surfing and email.

    • Dear Neel,
      awk and sed are something i really appreciate very much. It needs a lot of dedication to produce an article on awk and sed. I will do as soon as possible.
      Keep Connected. thanks for your feedback.

  3. I think answer for Q6 isn’t fully correct.

    1. ~/.bashrc will run only if user shell is bash, and ~/.bashrc will run after ~/.bash_profile script if it present.
    2. Threre are a lot of scripts may run before ~/.profile script. At first /etc/profile, and then every script in /etc/profile.d/ directory.
    At fact ~/.bashrc and ~/.profile are the lastest files which called for user profile.

    • Thanks @ saber, for your feedback. we are coming up with next interview article on next saturday. Till then stay tuned and connected.

  4. There is a mistake (twice) in the question and answer about resolv.conf. The file is wrongly named resolve.conf instead of resolv.conf.

    • Thanks @ Yannic for pointing that out. libreoffice dictionary ammended it automatically from resolv.conf to resolve.conf.

      Anyway, It has been fixed in the article.


Got Something to Say? Join the Discussion...

Thank you for taking the time to share your thoughts with us. We appreciate your decision to leave a comment and value your contribution to the discussion. It's important to note that we moderate all comments in accordance with our comment policy to ensure a respectful and constructive conversation.

Rest assured that your email address will remain private and will not be published or shared with anyone. We prioritize the privacy and security of our users.