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  1. Which command is used to remove the read permission of the file 'note' from both the group and others?

  2. A.

     chmod go+r note

    B.

     chmod go+rw note

    C.

     chmod go-x note

    D.

     chmod go-r note

    E.

     None of the above

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  3. Which of the following commands is used to display the directory attributes rather than its contents?

  4. A.

     ls -l -d

    B.

     ls -l

    C.

     ls -x

    D.

     ls -F

    E.

     None of the above

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  5. Which of the following files will displayed by this command cat *ch*

  6. A.

     patch

    B.

     catch

    C.

     .ch

    D.

     All of the above

    E.

     None of the above

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  7. The Octal number to be given alogn with chmod command to make a file readable, writable and executable to the owner, readable and executable to group and others is:

  8. A.

     0

    B.

     755

    C.

     744

    D.

     555

    E.

     None of the above

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  9. If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use

  10. A.

     tty ^c

    B.

     stty intr ^c

    C.

     stty echoe

    D.

     stty echo ^a

    E.

     None of the above

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  11. Which of the following is not a communication command.

  12. A.

     write

    B.

     mesg

    C.

     mail

    D.

     grep

    E.

     None of the above

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  13. Which of the following keys is used to move the cursor to the end of the paragraph.

  14. A.

     }

    B.

     {

    C.

     |

    D.

     $

    E.

     None of the above

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  15. Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?

  16. A.

     cat emp[!0-9]

    B.

     more [emp][!0-9]

    C.

     cat emp[x-z]

    D.

     cat emp[a-z]

    E.

     None of the above

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  17. The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is

  18. A.

     tee

    B.

     tr

    C.

     sort

    D.

     grep

    E.

     None of the above

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  19. Which command is used to remove a file?

  20. A.

     remove

    B.

     rm

    C.

     mv

    D.

     del

    E.

     None of the above

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