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CSE :: Unix

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

  2. A.
    logic
    B.
    profile
    C.
    shell
    D.
    erxc
    E.
    None of the above

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

  4. A.
    grep
    B.
    wc
    C.
    touch
    D.
    cat
    E.
    None of the above

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

  6. A.
    wc - 1
    B.
    wc -c
    C.
    wc -w
    D.
    wc -r
    E.
    None of the above

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

  8. A.
    ls
    B.
    lp
    C.
    dir
    D.
    tar
    E.
    None of the above

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

  10. A.
    cd
    B.
    od
    C.
    of
    D.
    oct
    E.
    None of the above

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

  12. A.
    s
    B.
    S
    C.
    a
    D.
    i
    E.
    None of the above

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

  14. A.
    :pat
    B.
    ?pat
    C.
    /pat
    D.
    All of the above
    E.
    None of the above

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

  16. A.
    $!
    B.
    $#
    C.
    $0
    D.
    $*
    E.
    None of the above

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

  18. A.
    -4
    B.
    -f
    C.
    -1
    D.
    -2
    E.
    None of the above

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  19. Which of the following command addresses all users who are currently hooked on?

  20. A.
    write
    B.
    mail
    C.
    wall
    D.
    mesg
    E.
    None of the above

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