Introduction to Linux I Chapter 8 Exam Answer
Question ID 569
Which regular expression character matches any one character?
Question ID 570
Which regular expression character matches zero or more of the previous character?
Question ID 571
Which regular expression character matches one or more of the previous character?
Question ID 572
Which of the following regular expression characters is an extended regular expression character?
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
Question ID 574
The regular expression a? is equivalent to:
Question ID 575
The regular expression a* is equivalent to:
Question ID 576
The regular expression a+ is equivalent to:
Question ID 577
To use extended regular expressions, you can use:
- grep -e
- grep -E
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
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
Question ID 581
Which option for grep will invert the pattern matching results?
Question ID 582
If you want to use grep without regard to the capitalization of text, you can use the option: