Regular expressions - Revision history

Jimbo: Reverted edits by 74.231.24.2 (Talk); changed back to last version by Ninereasons

2007-10-01T00:07:52Z

Reverted edits by 74.231.24.2 (Talk); changed back to last version by Ninereasons

Ninereasons: egrep

2006-06-22T18:39:20Z

egrep

Ninereasons: programming languages

2006-06-12T19:23:15Z

programming languages

Ninereasons: a little more clarity

2006-06-12T19:21:26Z

a little more clarity

Nvrmnd at 00:35, 14 January 2005

2005-01-14T00:35:34Z

Jimbo at 14:15, 18 October 2004

2004-10-18T14:15:04Z

Dave at 20:35, 29 September 2004

2004-09-29T20:35:27Z

New page

← Older revision		Revision as of 18:39, 22 June 2006
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−	'''Regular expressions''' are patterns that are used to describe a string of characters. Regular expressions might be used to match substrings in text as a logical condition for doing something in a program, for capturing the text matched by the expression in order to do something with it, and many other uses. From the commandline and in [[shell script]]s, the stream editor ([[sed]]) is used to make substitutions for matched text. For more complex types of pattern matching and text manipulation, [[Perl]] and [[Tcl]] have a built-in regular expression engine; and most modern programming languages have regular expression modules.	+	'''Regular expressions''' are patterns that are used to describe a string of characters. Regular expressions might be used to match substrings in text as a logical condition for doing something in a program, for capturing the text matched by the expression in order to do something with it, and many other uses. Users more familiar with Windows might think of regular expressions as comparable to "wildcards", only wilder.
		+
		+	From the commandline and in [[shell script]]s, the stream editor ([[sed]]) is used to make substitutions for matched text. <code>egrep</code> (shorthand for <code>grep -E</code>) filters strings using regular expressions. For more complex types of pattern matching and text manipulation, [[Perl]] and [[Tcl]] have a built-in regular expression engine; and most modern programming languages have regular expression modules.

	== external links ==		== external links ==

← Older revision		Revision as of 19:23, 12 June 2006
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−	'''Regular expressions''' are patterns that are used to describe a string of characters. Regular expressions might be used to match substrings in text as a logical condition for doing something in a program, for capturing the text matched by the expression in order to do something with it, and many other uses. From the commandline and in [[shell script]]s, the stream editor ([[sed]]) is used to make substitutions for matched text. For more complex types of pattern matching and text manipulation, [[Perl]] and [[Tcl]] have a built-in regular expression engine; and most modern languages have regular expression modules.	+	'''Regular expressions''' are patterns that are used to describe a string of characters. Regular expressions might be used to match substrings in text as a logical condition for doing something in a program, for capturing the text matched by the expression in order to do something with it, and many other uses. From the commandline and in [[shell script]]s, the stream editor ([[sed]]) is used to make substitutions for matched text. For more complex types of pattern matching and text manipulation, [[Perl]] and [[Tcl]] have a built-in regular expression engine; and most modern programming languages have regular expression modules.

	== external links ==		== external links ==

← Older revision		Revision as of 19:21, 12 June 2006
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−	'''Regular expressions''' are used to ~~express~~ a ~~subset~~ of ~~strings and can~~ be used ~~almost everywhere~~ in ~~FreeBSD~~ and other *nix's. ~~See also~~ [[sed]]	+	'''Regular expressions''' are patterns that are used to describe a string of characters. Regular expressions might be used to match substrings in text as a logical condition for doing something in a program, for capturing the text matched by the expression in order to do something with it, and many other uses. From the commandline and in [[shell script]]s, the stream editor ([[sed]]) is used to make substitutions for matched text. For more complex types of pattern matching and text manipulation, [[Perl]] and [[Tcl]] have a built-in regular expression engine; and most modern languages have regular expression modules.

	== external links ==		== external links ==

← Older revision		Revision as of 00:35, 14 January 2005
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−	~~see~~ also [[sed]] ~~(wow, this is WOEFULLY inadequate~~.)	+	'''Regular expressions''' are used to express a subset of strings and can be used almost everywhere in FreeBSD and other *nix's. See also [[sed]]
		+
		+	== external links ==
		+	[http://en.wikipedia.org/wiki/Regular_expression Wikipedia entry]
		+
	[[Category:FreeBSD Terminology]]		[[Category:FreeBSD Terminology]]

← Older revision		Revision as of 14:15, 18 October 2004
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−		+	see also [[sed]] (wow, this is WOEFULLY inadequate.)
−	see also [[sed]]	+	[[Category:FreeBSD Terminology]]