Introduction to Linux I Chapter 8 Exam

Introduction to Linux I Chapter 8 Exam Answer

  1. Question ID 569

    Which regular expression character matches any one character?

    • .
    • ?
    • +
    • *
  2. Question ID 570

    Which regular expression character matches zero or more of the previous character?

    • ?
    • +
    • *
    • .
  3. Question ID 571

    Which regular expression character matches one or more of the previous character?

    • $
    • *
    • +
  4. Question ID 572

    Which of the following regular expression characters is an extended regular expression character?

    • +
    • .
    • $
    • *
  5. Question ID 573

    What does “|” do in a regular expression?

    • Redirects input to the command
    • Redirects output from the command
    • Separates repetition modifiers
    • Separates alternative patterns that can be matches
  6. Question ID 574

    The regular expression a? is equivalent to:

    • a{0,1}
    • a{1}
    • a{1,}
    • a{0,}
  7. Question ID 575

    The regular expression a* is equivalent to:

    • a{0,1}
    • a{1,}
    • a{0,}
    • a{1}
  8. Question ID 576

    The regular expression a+ is equivalent to:

    • a{1}
    • a{1,}
    • a{0,}
    • a{0,1}
  9. Question ID 577

    To use extended regular expressions, you can use:

    (choose two)

    • grep -e
    • fgrep
    • egrep
    • grep -E
  10. Question ID 578

    To use regular expression characters to match themselves, you cannot:

    • Put the character in the square brackets
    • Use the fgrep command
    • Use the slash in front of the character
    • Use the backslash in front of the character
  11. Question ID 579

    What is NOT a purpose of using parentheses around parts of a regular expression?

    • They can be used to make alternation more efficient
    • They can be used to refer back to what was matched
    • They can be used to group characters for repetition
    • They can be used to change the order that the pattern is evaluating
  12. Question ID 581

    Which option for grep will invert the pattern matching results?

    • -i
    • -v
    • -r
    • -o
  13. Question ID 582

    If you want to use grep without regard to the capitalization of text, you can use the option:

    • -t
    • -v
    • -i
    • -r

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