Home » LPI » 117-101 » What does the + symbol mean in the following grep regular expression: grep ‘^d[aei]+d$’ /usr/share/dict/words
What does the + symbol mean in the following grep regular expression: grep ‘^d[aei]+d$’ /usr/share/dict/words
A. Match the preceding character set ([aei]) one or more times.
B. Match the preceding character set ([aei]) zero or more times.
C. Match the preceding character set ([aei]) zero or one times.
D. Match a literal + symbol.
Correct Answer: D
Explanation/Reference:
Explanation:
The answer should be "Match a literal + symbol" because there is a backslash symbol before the plus, so it should match a literal +.
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