Metacharacters
“I have never meta character I didn't like.” No, that is not what is meant here. A metacharacter is a character that has a special meaning. Five characters have special meanings. They are shown in Table 4.2 with an explanation of each of their meanings.
| Symbol | Meaning |
|---|---|
| ! | Matches all strings except those matched by the pattern-list |
| * | Matches zero or more occurrences of the pattern-list |
| ? | Matches zero or one occurrence of the pattern-list |
| @ | Matches exactly one occurrence of the pattern-list |
| + | Matches one or more occurrences of the pattern-list |
A pattern-list is one or more patterns separated by an ampersand (&) or a vertical bar (|). An & between two patterns indicates that both patterns ...
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