Difference between revisions of "Humdrum lab 7"
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[[File:basic-regular-expressions.png|600px|center]] | [[File:basic-regular-expressions.png|600px|center]] | ||
| − | === Dot metacharacter == | + | === Dot metacharacter === |
The dot, or period, character is used to indicate any single character. In the following example, the regular expressin "c.t" will match to any three characters which start with "c", end with "t", and have any single character between these two characters. | The dot, or period, character is used to indicate any single character. In the following example, the regular expressin "c.t" will match to any three characters which start with "c", end with "t", and have any single character between these two characters. | ||
[[File:basic-regular-expression-dot.png|500px|center]] | [[File:basic-regular-expression-dot.png|500px|center]] | ||
Revision as of 05:00, 4 May 2018
Regular Expressions
Basic Regular Expressions
"Basic" regular expressions are the initial implementation of grep, that came with unix in 1973. Here are the "metacharacters" in the basic implementation of regular expressions:
Dot metacharacter
The dot, or period, character is used to indicate any single character. In the following example, the regular expressin "c.t" will match to any three characters which start with "c", end with "t", and have any single character between these two characters.
