Wildcard and Regular Expressions

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Wildcard and Regular Expressions



There are two kind of wildcards, one is (*), the other is (?). (*) stands for any number of characters (?)stands for one character. and they are case-insensitive.



*.txt matchs aaa.txt and bbb.txt

a?.txt matchs aa.txt and ab.txt


Regular Expressions:

Regular Expressions allow to search complex patterns of words. it looks a bit hard for novices, but it's really simple and powerful.