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Computer Science :: Unix & Linux Basics

  1. Which of the following command is used to count just the number of lines contained in a file?

  2. A.

     wc -l

    B.

     wc -c

    C.

     wc -w

    D.

     wc -r

    E.

     None of the above

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  3. Which of the following command is used to go to home directory?

  4. A.

     cd..

    B.

     cd/

    C.

     cd

    D.

     cd HOME.

    E.

     None of the above

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  5. Which command is used to move all files to the bin sub-directory of the parent directory?

  6. A.

     mv *.* /bin/

    B.

     mv * /bin/*

    C.

     mv * ../bin

    D.

     mv * ../bin *.*

    E.

     None of the above

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  7. Which command is used to save the standard output in a file, as well as display it on the terminal?

  8. A.

     more

    B.

     cat

    C.

     grep

    D.

     tee

    E.

     None of the above

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  9. The command that can be used to restrict incoming messages to a user is

  10. A.

     mesg

    B.

     grep

    C.

     halt

    D.

     sleep

    E.

     None of the above

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  11. Which of the following commands is used to copy directory structures in and out

  12. A.

     cp

    B.

     cpio

    C.

     cp - p

    D.

     copy

    E.

     None of the above

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  13. Which of following commands is used for an automatic reminder service?

  14. A.

     write

    B.

     mesg

    C.

     calendar

    D.

     mail

    E.

     None of the above

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  15. Which command allows you to view your file 24 lines at a time?

  16. A.

     more

    B.

     pg

    C.

     cat

    D.

     lp

    E.

     None of the above

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  17. Which of the following special shell variables is used to process number of the current shell?

  18. A.

     $!

    B.

     $$

    C.

     $0

    D.

     $*

    E.

     None of the above

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  19. Which option is used with cmp command to give a detailed list of the byte number and the differing bytes in octal for each character that differs in both the files?

  20. A.

     -l

    B.

     -d

    C.

     -r

    D.

     -b

    E.

     None of the above

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