Sstrutt: /* Useful/Standard RegEx */ Added CIDR

2024-09-27T13:55:18Z

Useful/Standard RegEx: Added CIDR

← Older revision		Revision as of 13:55, 27 September 2024
Line 6:		Line 6:
	! Matches !! Expression		! Matches !! Expression
	\|-		\|-
	\| '''IP Address'''		\| '''IPv4 Address'''
	\| <code><nowiki> ^\b((25[0-5]\|2[0-4]\d\|[01]\d\d\|\d?\d)\.){3}(25[0-5]\|2[0-4]\d\|[01]\d\d\|\d?\d)\b </nowiki></code>		\| <code><nowiki> \b((25[0-5]\|2[0-4]\d\|[01]\d\d\|\d?\d)\.){3}(25[0-5]\|2[0-4]\d\|[01]\d\d\|\d?\d)\b </nowiki></code>
			\|-
			\| '''IPv4 Address''' alternative
			\| <code><nowiki> \b(([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])\.){3}([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])\b </nowiki></code>
			\|-
			\| '''IPv4 CIDR Address'''
			\| <code><nowiki> \b(([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])\.){3}([0-9]\|[1-9][0-9]\|1[0-9]{2}\|2[0-4][0-9]\|25[0-5])/([1-9]\|1[0-9]\|2[0-9]\|3[1-2])\b </nowiki></code>
	\|-		\|-
	\| '''Hostname''' (no domain)		\| '''Hostname''' (no domain)

Sstrutt: /* Between Parentheses */ Fixed typo

2012-05-14T17:23:37Z

Between Parentheses: Fixed typo

← Older revision		Revision as of 17:23, 14 May 2012
Line 40:		Line 40:
	#* Matches everything		#* Matches everything
	# <code> (?=\]) </code>		# <code> (?=\]) </code>
	#* Requires that <code> [ </code> immediately follows the match		#* Requires that <code> ] </code> immediately follows the match

	=== VMHBA LUN ID ===		=== VMHBA LUN ID ===

Sstrutt: Initial creation - content from Regular Expressions page

2012-04-13T13:33:01Z

Initial creation - content from Regular Expressions page

New page

See the [[Regular Expressions]] page for more detail on syntax.

== Useful/Standard RegEx ==
{|class="vwikitable"
|-
! Matches !! Expression
|-
| '''IP Address'''
| <code><nowiki> ^\b((25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)\.){3}(25[0-5]|2[0-4]\d|[01]\d\d|\d?\d)\b </nowiki></code>
|-
| '''Hostname''' (no domain)
| <code><nowiki> \A(\w|-)+ </nowiki></code>
|-
| '''Email address'''
| <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>
|}

== Detailed Examples ==
=== Logfile Name ===
''' <code> \d{4}-[A-Za-z]{3}-Week\d{1}.log </code> '''

Example matches...
* <code> 2010-Feb-Week4.log </code>
* <code> 2009-Dec-Week2.log </code>
* <code> 1234-aBc-Week0.log </code>

=== Between Parentheses ===
''' <code> (?<=\[)(.*?)(?=\]) </code> '''

Matches everything between <code> [ </code> and <code> ]</code>, so for example...
* <code> VMFS_SCSI_DS_01 </code> is matched from <code> [VMFS_SCSI_DS_01] My_VM/MyVM.vmdk </code>

Its essentially done via three chunks of the regex...
# <code><nowiki> (?<=\[) </nowiki></code>
#* Requires that <code> [ </code> immediately proceeds the match
# <code> (.*?) </code>
#* Matches everything
# <code> (?=\]) </code>
#* Requires that <code> [ </code> immediately follows the match

=== VMHBA LUN ID ===
'''<code> (?<=:)([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5])$ </code>

Finds a number between 0 and 255 immediately after a <code>:</code> at the end of a line, specifically intended to get the LUN ID from a VMware canonical path, so for example...
* <code>13</code> is matched from <code>vmhba3:0:13</code>

Stepping through the regex...
# <code><nowiki> (?<=:) </nowiki></code>
#* Requires that <code> : </code> immediately proceeds the match
# <code>([01]?[0-9]?[0-9]|2[0-4][0-9]|25[0-5])</code>
#* Matches any number between 0 and 255
# <code>$</code>
#* 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

=== 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

=== 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>

[[Category:Regex]]

Regex Examples - Revision history

Sstrutt: /* Useful/Standard RegEx */ Added CIDR

Sstrutt: /* Between Parentheses */ Fixed typo

Sstrutt: Initial creation - content from Regular Expressions page