LPI

117-101 · Question #143

What does the + symbol mean in the following grep regular expression: grep '^d[aei]\+d$' /usr/share/dict/words

The correct answer is D. Match a literal + symbol. See the full explanation below for the reasoning.

Question

What does the + symbol mean in the following grep regular expression: grep '^d[aei]+d$' /usr/share/dict/words

Options

AMatch the preceding character set ([aei]) one or more times.
BMatch thepreceding character set ([aei]) zero or more times.
CMatch the preceding character set ([aei]) zero or one times.
DMatch a literal + symbol.

How the community answered

(21 responses)

A
5% (1)
B
5% (1)
C
14% (3)
D
76% (16)

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