metacharacter
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Metacharacter — A metacharacter is a character that has a special meaning (instead of a literal meaning) to a computer program, such as a shell interpreter or a regular expression engine. Examples In some Unix shells and Windows PowerShell, the ; (semicolon)… … Wikipedia
Regular expression — In computing, a regular expression provides a concise and flexible means for matching (specifying and recognizing) strings of text, such as particular characters, words, or patterns of characters. Abbreviations for regular expression include… … Wikipedia
String literal — A string literal is the representation of a string value within the source code of a computer program. There are numerous alternate notations for specifying string literals, and the exact notation depends on the individual programming language in … Wikipedia
Regular expression examples — A regular expression ( also RegEx or regex ) is a string that is used to describe or match a set of strings according to certain syntax rules. The specific syntax rules vary depending on the specific implementation, programming language, or… … Wikipedia
Sed — (Stream EDitor) refers to a Unix utility which (a) parses text files and (b) implements a programming language which can apply textual transformations to such files. It reads input files line by line (sequentially), applying the operation which… … Wikipedia
Ampersand — This article is about the symbol. For the magazine, see Ampersand (magazine). Ampersand Punctuation … Wikipedia
Backslash — The backslash ( ) is a typographical mark (glyph) used chiefly in computing. It was first introduced to computers in 1960 by Bob Bemer. [ [http://www.thocp.net/biographies/bemer bob.htm Mini Biography of Bob Bemer] ] Sometimes called a reverse… … Wikipedia
Extensibility pattern — In computer programming, the extensibility pattern is a design pattern that provides a framework for straightforward addition of functionality to a system at a later date.Extensibility is often desired when an application must be able to support… … Wikipedia
Vulnerability (computing) — In computer security, the term vulnerability is applied to a weakness in a system which allows an attacker to violate the integrity of that system. Vulnerabilities may result from weak passwords, software bugs, a computer virus or other malware,… … Wikipedia
Perl Compatible Regular Expressions — Original author(s) Philip Hazel Stable release 8.20 / 2011 10 21; 25 days ago (2011 10 21) Written in C … Wikipedia
