Important Unix Shell Questions

Last Updated on Tuesday, 3 May 2011 04:08 Written by EditorSunday, 16 March 2008 12:42

Some Important Unix Shell Questions for Recent Graduates to help them in their Interview Preparations.

  1. There can be multiple Kernels and shells running on your system. True or False?
  2. Why shell is called Command Interpreter?
  3. Two UNIX systems may or may not use the same system calls. True or False?
  4. To obtain help on any feature of the system, what are the possible help sources available?
  5. Why are the directories /bin and /usr/bin usually found first in the output of echo $PATH?
  6. If two commands with the same filename exist in two directories in PATH, how can they be executed.
  7. How is the Current directory is indicated in the value of the PATH?
  8. Use the type command with the following arguments—cd, date, pwd and ls. Which are the internal commands in the list?
  9. What is the difference between an argument and an option?
  10. if the command ls –all works on your system, which flavor of UNIX could you be using?
  11. What does the secondary prompt look like and when does it appear?
  12. You located the string crontab in a man page by searching with /crontab [Enter]. How do you find out the other occurrences of this string in the page?
  13. What is a pager? Name the two standard pagers used by man.
  14. If a command doesn’t seem to complete, which key will you press to interrupt it?
  15. Do you need to wait for a command to finish before entering the next one?
  16. What do the | and the three dots in the SYNOPSIS section of these man pages indicate as shown below?
    /usr/xpg4/bin/tail [ -f | -r ]
    /usr/bin/ls [ -aAbcCdfFgilLmnopqrRstux1 ] [file .. ]
  17. How do you direct man to use a specific pager, say less?
  18. What is a whitespace? Explain the treatment the shell metes out to a command that contains a lot of whitespace.
  19. A Program file named foo exists in the current directory, but when we try to execute it by entering foo, we see the message foo: command not found. Explain how that can happen?
  20. What do multiprogramming, multiuser and multitasking mean?
  21. Why are many UNIX commands designed to perform simple rather than complex tasks?

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This entry was postedon Sunday, March 16th, 2008 at 12:42 amand is filed under Unix / Linux. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

26 Comments
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  1. john February 27, 2010 at 2:41 am

    sent this question and answers to my mail please i am studing very low skills collage so u sent whatever u have about interview points and tips please definatly it will help to my friends also

  2. ombehera December 17, 2009 at 4:40 pm

    Hi all d qs r really helpfull ..can u plz send me d ans of d qs.
    thnx..

  3. abdul October 22, 2009 at 8:41 am

    if any on got the answers for the these questions then please mail me please…

    thanx….

  4. kanchan kumar September 10, 2009 at 2:16 am

    please sir,send me the answers.

  5. Ganesh August 30, 2009 at 11:27 am

    Can any one post the AIX Interview questions pls

  6. gourav August 12, 2009 at 7:52 am

    please give me the answers

  7. Nitesh August 1, 2009 at 1:29 pm

    Sir;
    Can you send me the Answers of the following question it would be helpful for me as these questions are from the book UNIX by DAs please reply soon

  8. sowmia May 7, 2009 at 10:00 pm

    please send the answer for these questions imediately

  9. sugan November 24, 2008 at 8:33 am

    sir, can u send me question and answers in data structures,operating system,computer network,unix shell.

  10. suganya November 24, 2008 at 8:30 am

    sir the questions r helpful. can u send me the questions and answers in DS, computer architecture pls sir……….

  11. suganya November 24, 2008 at 8:27 am

    sir the questions r informative, i am a pre- final year student, pls can u send me previous tcs and wipro question and answers in c, c++,java, os,cn. pls sir ………thank u

  12. J.balavignesh October 16, 2008 at 2:37 am

    sir,this system is very very use full for unemployee,employeer, mainly college students usefull and develop the knowledege sir .i heartly welcome this system sir………….thanking you sir

  13. GOUTHAMI August 19, 2008 at 1:13 pm

    The questions u hav provided above r very helpful.I recommend u to send the question papers held in various places so dat i can go through…sir pls do me this favour….i hope i reply from u…thank u sir…

  14. syed hashmi July 24, 2008 at 8:01 am

    thanks for providing free Q n A on unix
    can you please mail me Question n Answer on unix,c, c++ java and html i will be very thankful to u

    regards
    syed hashmi

  15. kailas July 19, 2008 at 5:43 am

    plz send me this question ans

  16. Amit July 19, 2008 at 2:42 am

    Sir,

    I went through the list of tech. questions posted. It would be so grateful of you if you would send me previous year cts tech. papers with answers which would be so very helpful for my placement next month.
    Thanking you,
    Amit Pal

  18. Lakshmi Sreekanth July 11, 2008 at 12:49 am

    good for some people,but not for freshers…..

  20. nagarajan July 5, 2008 at 5:10 am

    sir,
    I went through the list of tech. questions posted.It would be so grateful of you if you would send me previous year cts tech. papers with answers which would be so very helpful for my placement next month.
    Thanking you, youresobedanly

    k.nagarajan

  21. Aravind.T May 10, 2008 at 1:42 am

    Sir,

    I went through the list of tech. questions posted. It would be so grateful of you if you would send me previous year cts tech. papers with answers which would be so very helpful for my placement next month.
    Thanking you,
    Aravind.T

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