- Wildcard character
: "For other meanings of 'wild card' see
wild card."The term wildcard character has the following meanings:
telecommunications, a wildcard character is a
character that may be substituted for any of a defined subset of all possible characters.
high-frequency(HF) radio automatic link establishment, the wildcard character "?" may be substituted for any one of the 36 characters, "A" through "Z" and "0" through "9."
* Whether the wildcard character represents a single character or a string of characters must be specified.
computer( software) technology, a wildcard character can be used to substitute for any other character or characters in a string. The asterisk(*) usually substitutes as a wildcard character for any zero or more characters, and the question mark(?) usually substitutes as a wildcard character for any one character, as in the command line interpreters of CP/M, DOS, Microsoft Windowsand Unix-like operating systems. This is referred to as glob expansion.In SQL, wildcard characters can be used in "LIKE" expressions; the percentsign (%) matches zero or more characters, and underscore(_) a single character. In Microsoft Access, wildcard characters can be used in "LIKE" expressions; the asterisksign (*) matches zero or more characters, and question mark(?) a single character. In many regular expressionimplementations, the period (.) is the wildcard character for a single character.
Federal Standard 1037Cand from MIL-STD-188
Wildcard DNS record
* [http://www.linfo.org/wildcard.html How to Use Wildcards]
* [http://shwild.org/ shwild: Shell-compatible wildcards (C/C++)]
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Look at other dictionaries:
wildcard character — A character that represents one or more unknown characters. In many operating systems, a question mark (?) represents a single unknown character in a filename or filename extension, and an asterisk (*) represents any number of unknown… … Dictionary of networking
Wildcard DNS record — A wildcard DNS record is a record in a DNS zone that will match requests for non existent domain names. A wildcard DNS record is specified by using a * as the left most label (part) of a domain name, e.g. *.example.com. The exact rules about when … Wikipedia
Wildcard — Platzhalter; Joker; Stellvertretersymbol * * * Wild|card 〈[ waıldka:(r)d]〉 auch: Wild Card 〈f. 10; Sp.; Tennis〉 vom Veranstalter eines Tennisturnieres frei vergebener Platz an einen Spieler … Universal-Lexikon
wildcard — /ˈwaɪldkad/ (say wuyldkahd) noun 1. a playing card to which the holder may assign the value of any other card. 2. Computers a non alphanumeric character used especially in searches to represent any character or set of characters. 3. Sport a… … Australian English dictionary
wildcard — noun a) A character that takes the place of any other character or string that is not known or specified. In searching, if a,m finds amalgam, atom and alum, then , is acting as a wildcard. b) An uncontrolled or unpredictable element … Wiktionary
wildcard — n. card whose value is determined by the player (Cards); athlete or team chosen to compete though unqualified; unpredictable factor; character that can be used to represent every possible character combination (Computers) … English contemporary dictionary
Escape character — In computing and telecommunication, an escape character is a character which invokes an alternative interpretation on subsequent characters in a character sequence. An escape character is a particular case of metacharacters. Generally, the… … Wikipedia
Asterisk — This article is about the typographical symbol. For other uses, see Asterisk (disambiguation). See also: * (disambiguation) * Asterisk … Wikipedia
X resources — In the X Window System, the X resources comprise parameters of computer programs such as the name of the font used in the buttons, the background color of menus, etc. They are used in conjunction or in alternative to command line parameters and… … Wikipedia
Wild card — The term wild card was originally used in card games, but the term has evolved to describe what the Merriam Webster Dictionary calls an unknown or unpredictable factor in any number of domains.Wild card may refer to:* Wild card (card games) a… … Wikipedia