Introduction to Linux I

Introduction to Linux I Chapter 6 Exam Answer 2016

1. Which of the following is not used for globbing?

  • [
  • #
  • ?
  • *

2. How many times can you use a * glob character in a pattern?

  • Two
  • No limit
  • Three
  • One

3. The command echo a* will display:

  • All of the files in the current directory that begin with an “a” character.
  • Only the file named “a*”.
  • All of the files in any directory that begin with an “a” character.
  • All of the files in the current directory that begin with an “a” or “A” character.

4. The command echo ???a will display:

  • All of the files in the current directory that have four characters in the file name.
  • All of the files in the current directory that have four characters in the file name with the last character being an “a” character.
  • All of the files in the current directory that end with an “a” character.
  • Only a file named ???a

5. Which of the following characters can be used to negate (indicate NOT matching the following characters), when placed as the first of a set of characters enclosed in square brackets [] ?. (choose two)

  • ?
  • ^
  • ~
  • !

6. The range defined inside of square brackets is based on the:

  • Standard text table
  • ASCII text table
  • Invalid question as ranges are not permitted
  • ANSI text table

7. To view the ASCII text table in Linux, you can use the following command:

  • view ASCII
  • list ACSII
  • man ASCII
  • echo ASCII

8. Within square brackets, (Example: [?]) the ? character means:

  • Match a ? character
  • Match zero or more of any ? characters
  • Exactly one character
  • Nothing, it has no meaning at all

9. You can combine glob characters in a single pattern, for example: a??*[0-9].. True or False?

  • True
  • False

10. Which command will display more information about globbing?

  • echo globbing
  • man 7 globbing
  • man 7 glob
  • man -7 glob

11. Which command performs globbing?

  • The ls command
  • The echo command
  • The bash command
  • The display command

12. Which of the following will match files that have the string “hello” somewhere in the file name?

  • echo hello*hello
  • echo hello*
  • echo *hello*
  • echo *hello

13. The glob pattern [a-d] would match:

  • A file name with a single character that is either an “a”, “-“, or “d”.
  • Nothing, this is an invalid glob pattern.
  • A file name with a single character that is either a “a”, “b”, “c”, or “d”.
  • All files

14. The glob pattern [!abc]*

  • Nothing, this is an invalid glob pattern
  • All files that start with any character except “a”, “b” or “c”
  • All files
  • All files that start with either of the following characters: “!”, “a”, “b” or “c”.

15. Which glob character matches “exactly one character”?

  • ?
  • *
  • .
  • [

16. Which glob character matches “zero or more characters”?

  • .
  • ?
  • *
  • [

17. Which two characters match “a single character from a set of specified characters”?

  • []
  • ..
  • **
  • ??

18. Which two characters represent the empty string?

  • **
  • &&
  • ..
  • “”

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