The interpretation of the asterisk depends on the exact filter language and dialect in use.
For example, the Windows console supports an asterisk as a placeholder for any alphanumerical character which can be part of a file base name, that is, letters, digits, underscore, and some others, but other characters with special meaning in this context, such as a period, a colon or a backslash. For example - the instruction Dir *.txt would list every file with the extension txt.
Commonly used equivalents console applications under the Unix (Linux) family of operating systems (so-called 'shell' programs such as BASH and many others) interpret the asterisk as a placeholder for any valid file name character (that is, including the period).
In most regular expression dialects, the asterisk does not represent a particular character or group of characters at all. It is instead used to implement a multiplier, where the asterisk matches "zero or more times whichever search expression precedes the asterisk." Thus, 'AZ*' will be interpreted as "match a sequence consisting of letter A, followed by zero or more letters Z: 'A', 'AZ', 'AZZZZZ', etc.
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wild card
A: an ****** or a ?????? Is usually accepted
* (Asterisk/Star)
* (Asterisk/Star)
A wild card is one which can have any value or suit in a game at the discretion of the whoever holds it.
It is an asterisk. It is used as a wildcard character, for footnotes, or for censorship- as in "You son of a *****."
The wildcard characters in C programming include the asterisk (*) and the question mark (?). An asterisk stands for any missing number of characters in a string while a question mark represents exactly one missing character.
In Windows and UNIX-based systems, while specifying filenames, ? is a wildcard that substitutes for exactly one character. In SQL databases, the underscore (_) matches exactly one character.
It is commonly used as a zero-or-more wildcard character match. "o*k" matches "ok" and "oak", but not "ox".
wildcard