Regular Expressions - Revision history

Sstrutt: /* Quantifiers */ Typo fixes

2013-06-05T14:24:50Z

Quantifiers: Typo fixes

← Older revision		Revision as of 14:24, 5 June 2013
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	\| <code>?</code> \|\| Match 0 or 1 times only \|\| <code>dog?</code> matches <code>do</code> or <code>dog</code> only		\| <code>?</code> \|\| Match 0 or 1 times only \|\| <code>dog?</code> matches <code>do</code> or <code>dog</code> only
	\|-		\|-
	\| <code>{n}</code> \|\| Match exactly <code>n<code> times \|\| <code>dog{2}</code> matches <code>dogg</code> only		\| <code>{n}</code> \|\| Match exactly <code>n</code> times \|\| <code>dog{2}</code> matches <code>dogg</code> only
	\|-		\|-
	\| <code>{n,}</code> \|\| Match <code>n<code> or more times \|\| <code>dog{2,}</code> matches <code>dogg</code>, or <code>doggg</code>, and so on		\| <code>{n,}</code> \|\| Match <code>n</code> or more times \|\| <code>dog{2,}</code> matches <code>dogg</code>, or <code>doggg</code>, and so on
	\|-		\|-
	\| <code>{n,m}</code> \|\| Match <code>n<code> up to <code>m</code> times \|\| <code>dog{2,4}</code> matches <code>dogg</code>, <code>doggg</code>, or <code>dogggg</code> only		\| <code>{n,m}</code> \|\| Match <code>n</code> up to <code>m</code> times \|\| <code>dog{2,4}</code> matches <code>dogg</code>, <code>doggg</code>, or <code>dogggg</code> only
	\|}		\|}

2012-05-14T17:23:12Z

Metacharacters: Fixed typos

← Older revision		Revision as of 17:23, 14 May 2012
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	\| <code><nowiki>\|</nowiki></code> \|\| Or, alternation \|\| <code>d<nowiki>\|</nowiki>fog</code> matches <code>dog</code> or <code>fog</code>		\| <code><nowiki>\|</nowiki></code> \|\| Or, alternation \|\| <code>d<nowiki>\|</nowiki>fog</code> matches <code>dog</code> or <code>fog</code>
	\|-		\|-
	\| <code>?=</code> \|\| Lookahead \|\| <code>dog(?=,)</code> matches the <code>dog</~~dog~~> in <code>dog,</code> but won't find a match in <code>dog</~~dog~~>		\| <code>?=</code> \|\| Lookahead \|\| <code>dog(?=,)</code> matches the <code>dog</code> in <code>dog,</code> but won't find a match in <code>dog</code>
	\|-		\|-
	\| <code>?<=</code> \|\| Look behind \|\| <code>(?<=big )dog</code> matches the <code>dog</~~dog~~> in <code>big dog</code> but won't find a match in <code>dog</~~dog~~>		\| <code>?<=</code> \|\| Look behind \|\| <code>(?<=big )dog</code> matches the <code>dog</code> in <code>big dog</code> but won't find a match in <code>dog</code>
	\|}		\|}

2012-05-14T17:21:39Z

Metacharacters: Added lookahead and look behind

← Older revision		Revision as of 17:21, 14 May 2012
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	\| <code>[...]</code> \|\| Bracketed [[#Character_Classes\|Character class]], any character contained in set <code>...</code> \|\| <code>[fld]og*</code> matches <code>fog</code>, <code>log</code>, or <code>dog</code> only		\| <code>[...]</code> \|\| Bracketed [[#Character_Classes\|Character class]], any character contained in set <code>...</code> \|\| <code>[fld]og*</code> matches <code>fog</code>, <code>log</code>, or <code>dog</code> only
	\|-		\|-
	\| <code><nowiki>\|</nowiki></code> \|\| Or, alternation \|\| <code>d\|fog</code> matches <code>dog</code> or <code>fog</code>		\| <code><nowiki>\|</nowiki></code> \|\| Or, alternation \|\| <code>d<nowiki>\|</nowiki>fog</code> matches <code>dog</code> or <code>fog</code>
			\|-
			\| <code>?=</code> \|\| Lookahead \|\| <code>dog(?=,)</code> matches the <code>dog</dog> in <code>dog,</code> but won't find a match in <code>dog</dog>
			\|-
			\| <code>?<=</code> \|\| Look behind \|\| <code>(?<=big )dog</code> matches the <code>dog</dog> in <code>big dog</code> but won't find a match in <code>dog</dog>
	\|}		\|}

2012-04-13T13:31:20Z

Major update, page now contains syntax overview, examples moved to new page

2012-01-05T11:14:25Z

Script Version: Corrected

← Older revision		Revision as of 11:14, 5 January 2012
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	=== Script Version ===		=== Script Version ===
	'''<code>(?<=v)[0-9]+(\.[0-9])+(?=.)</code>'''		'''<code>(?<=v)[0-9]+(\.[0-9]+)+(?=.)</code>'''

	Gets the script version number off the end of a script name		Gets the script version number off the end of a script name
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	# <code>[0-9]+</code>		# <code>[0-9]+</code>
	#* Matches one or more digits		#* Matches one or more digits
	# <code>(\.[0-9])+</code>		# <code>(\.[0-9]+)+</code>
	#* Matches <code>.n</code> one or more times		#* Matches <code>.n</code> one or more times
	# <code>(?=.)</code>		# <code>(?=.)</code>

2011-02-28T10:05:08Z

Lab Manager VM Prefix: fix typo

← Older revision		Revision as of 10:05, 28 February 2011
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	Matches the numeric prefix at the start of a Lab Manager VM name		Matches the numeric prefix at the start of a Lab Manager VM name
	* EG Matches <code>002310-<code> from <code> 002310-Server-A-10<code>		* EG Matches <code>002310-</code> from <code> 002310-Server-A-10</code>

2011-02-28T10:04:43Z

Examples: Added "Lab Manager VM Prefix"

← Older revision		Revision as of 10:04, 28 February 2011
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	# <code>(?=.)</code>		# <code>(?=.)</code>
	#* Requires that <code>.</code> follows the match		#* Requires that <code>.</code> follows the match

			=== Lab Manager VM Prefix ===
			'''<code>(\b\d{6}-)</code>'''

			Matches the numeric prefix at the start of a Lab Manager VM name
			* EG Matches <code>002310-<code> from <code> 002310-Server-A-10<code>

2011-02-18T14:18:31Z

Examples: Added "Script Version"

← Older revision		Revision as of 14:18, 18 February 2011
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	# <code>\s?</code>		# <code>\s?</code>
	#* Matches any white-space at the end of the match		#* Matches any white-space at the end of the match

			=== Script Version ===
			'''<code>(?<=v)[0-9]+(\.[0-9])+(?=.)</code>'''

			Gets the script version number off the end of a script name
			* EG Get <code> 1.2.3 </code> from <code>Script-v1.2.3.ps1</code>

			Stepping through the regex...
			# <code>(?<=v)</code>
			#* Requires that <code>v</code> immediately precedes the match
			# <code>[0-9]+</code>
			#* Matches one or more digits
			# <code>(\.[0-9])+</code>
			#* Matches <code>.n</code> one or more times
			# <code>(?=.)</code>
			#* Requires that <code>.</code> follows the match

2011-01-14T12:42:45Z

Useful/Standard RegEx: Added Multiple whitespace

← Older revision		Revision as of 12:42, 14 January 2011
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	\| '''Email address'''		\| '''Email address'''
	\| <code><nowiki> \b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b </nowiki></code>		\| <code><nowiki> \b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b </nowiki></code>
			\|-
			\| '''Multiple whitespace'''
			\| <code><nowiki> \b {2,}\b </nowiki></code>
	\|}		\|}

2010-11-17T13:21:07Z

Examples: Added "vRanger Backup text in VM Notes"

← Older revision		Revision as of 13:21, 17 November 2010
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	# <code>$</code>		# <code>$</code>
	#* Ensures that the proceeding match occurs at the end of a line		#* Ensures that the proceeding match occurs at the end of a line

			=== vRanger Backup text in VM Notes ===
			'''<code>\s?\bvRanger.Repository \[.\]\s?</code>'''

			Finds the text created by vRanger in a VM's notes (so you can strip it out)...
			* EG <code>vRanger Pro Backup: Type [Full] Result [Success] Time [27/09/2010 06:46:54] Repository [VC_Server]</code>

			Stepping through the regex...
			# <code>\s?</code>
			#* Matches any white-space at the start of the match
			# <code>\bvRanger.*</code>
			#* Matches <code>vRanger</code> at the start of a word and anything after until...
			# <code>Repository \[.*\]</code>
			#* Matches the end of a vRanger text segment, <code>Repository [hostname]</code>
			# <code>\s?</code>
			#* Matches any white-space at the end of the match