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Computer Science :: Unix & Linux Basics

  1. Which symbol is used to separate more than one command in the same command line?

  2. A.

     $

    B.

     #

    C.

     :

    D.

     ;

    E.

     None of the above

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  3. The agency that sits between the user and the UNIX system is called the

  4. A.

     logic

    B.

     profile

    C.

     shell

    D.

     erxc

    E.

     None of the above

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  5. Which of the following commands is used to update access and modification times of a file?

  6. A.

     grep

    B.

     wc

    C.

     touch

    D.

     cat

    E.

     None of the above

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  7. Which command is used to count just the number of characters in a file?

  8. A.

     wc - 1

    B.

     wc -c

    C.

     wc -w

    D.

     wc -r

    E.

     None of the above

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  9. Which of the following commands is used to list contents of directories?

  10. A.

     ls

    B.

     lp

    C.

     dir

    D.

     tar

    E.

     None of the above

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  11. Which command is used to display a file contents in octal form?

  12. A.

     cd

    B.

     od

    C.

     of

    D.

     oct

    E.

     None of the above

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  13. Which command will be used with vi editor to insert text to left of cursor?

  14. A.

     s

    B.

     S

    C.

     a

    D.

     i

    E.

     None of the above

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  15. In vi editor, forward search is performed using the command.

  16. A.

     :pat

    B.

     ?pat

    C.

     /pat

    D.

     All of the above

    E.

     None of the above

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  17. Which of the following special shell variables is used to process number of the last background job?

  18. A.

     $!

    B.

     $#

    C.

     $0

    D.

     $*

    E.

     None of the above

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  19. Which option will be used with ps command to slow the entire command line of the process being run?

  20. A.

     -4

    B.

     #NAME?

    C.

     -1

    D.

     -2

    E.

     None of the above

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