String | What it does | Example | What the example matches |
---|---|---|---|
* | Matches any string, including an empty string. | *Cheese* |
Every topic with "Cheese" somewhere in the name (but not "cheese") |
? | Matches any single character. | Example1? | Example10 and Example 1X but not example1 |
[...] | Matches any one of the enclosed characters. A pair of characters separated by a hyphen denotes a range expression; any character that sorts between those two characters, inclusive, using the current locale's collating sequence and character set, is matched. If the first character following the [ is a ^ then any character not enclosed is matched. A - may be matched by including it as the first or last character in the set. A ] may be matched by including it as the first character in the set. Within [ and ], character classes can be specified using the syntax [:class:], where class is one of the following classes defined in the POSIX.2 standard: alnum , alpha , ascii , blank , cntrl , digit , graph , lower , print , punct , space , upper , word , xdigit . A character class matches any character belonging to that class. The word character class matches letters, digits, and the character _. |
B[aeiou]g | Bag, Bog, Big, Beg, Bug |
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