Regex regular expressions - Revision history

Pio2pio: /* PCRE Perl Compatible Regular Expressions */

2020-05-14T18:58:24Z

PCRE Perl Compatible Regular Expressions

@@ Line 48: / Line 48: @@
 </source>
-= PCRE Perl Compatible Regular Expressions =
+= Regular Expression Matching ([http://molk.ch/tips/gnu/bash/rematch.html REMATCH]) =
 This also covers '''Notepad ++'''
   regex like [\r\n]+ matches CRLF in Notepad ++

2019-11-10T16:52:02Z

grep and regular expressions

@@ Line 36: / Line 36: @@
 5678 9101 1234
 #            ^ ^ # <- matched pattern:
 </source>

2019-11-10T16:06:23Z

grep and regular expressions

← Older revision		Revision as of 18:06, 10 November 2019
Line 32:		Line 32:
	<source lang=bash>		<source lang=bash>
	# Find 2+ consecutive digits, even if separated by a space		# Find 2+ consecutive digits, even if separated by a space
	echo "1234 5678 9101 1234" \| grep '\([0-9]\) *\1'		echo "1234 5678 9101 1234" \| grep '\([0-9]\) *\1' # basic BRE, meta characters need escaping
			echo "1234 5678 9101 1234" \| grep -E '([0-9]) *\1' # extended ERE, brackets are not escaped
			1234 5678 9101 1234
			# ^ ^ # <- matched pattern:
	</source>		</source>

2019-11-10T16:01:39Z

General expressions

@@ Line 3: / Line 3: @@
   \ -escape/protect character
   /[abc]+/ -matches a bb ccc
 = PCRE Perl Compatible Regular Expressions =

2019-11-10T15:36:47Z

← Older revision		Revision as of 17:36, 10 November 2019
Line 15:		Line 15:
	</source>		</source>

	~~===~~ Join 2 lines with colon ~~===~~
			;Join 2 lines with colon
	<source>		<source>
	Find what: ^(.*)[\r\n]+		Find what: ^(.*)[\r\n]+
	Replace with: '\1: ' #single quotes are not needed		Replace with: '\1: ' #single quotes are not needed
			</source>

	Before:
			{\| class="wikitable"
			\|+ Join 2 lines with colon
			\|-
			! Before
			! After
			\|- style="vertical-align:top;"
			\| <source>
	Extensions		Extensions
	None		None
Line 28:		Line 37:
	Name		Name
	bastion-1 (All resources to be created)		bastion-1 (All resources to be created)
			</source>
	~~After:~~		\| <source>
	Extensions: None		Extensions: None
	Cloud init: No		Cloud init: No
Line 35:		Line 44:
	bastion-1 (All resources to be created)		bastion-1 (All resources to be created)
	</source>		</source>
			\|}

	~~===~~ Resources ~~===~~		; Resources
	*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow		*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow

2019-11-10T15:30:37Z

Websense now owned and called Forepoint

← Older revision		Revision as of 17:30, 10 November 2019
Line 39:		Line 39:
	*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow		*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow

	= Websense ~~now owned and called Forepoint~~ =		= Forepoint aka legacy name Websense =
	It accepts reg expresions with limited form example:		It accepts reg expresions with limited form example:
	<tt>(.)</tt> -same as wildcard matches any ~~lengh~~ of string and brackets are ~~RegEx~~ delimiters		<tt>(.)</tt> -same as wildcard matches any length of string and brackets are Reg-ex delimiters

	= References =		= References =
	*[https://regex101.com/ regex101.com] Dynamic RegEx builder		*[https://regex101.com/ regex101.com] Dynamic RegEx builder

2018-12-14T14:12:27Z

= Join 2 lines with colon

2018-12-14T14:09:08Z

Notetad++

@@ Line 8: / Line 8: @@
   regex like [\r\n]+ matches CRLF in Notepad ++
-== Notetad++ ==
+== Notetad++ | npp | npp++ ==
 Find, replace and remove matching line. Find any occurances of <code>help</help>, ending with <code>\r?\n</code>. <code>\r</code> is optional in case the file doesn't have Windows line endings.
 <source>
@@ Line 14: / Line 14: @@
 Replace with:
 </source>
 === Resources ===
 *[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow

2018-10-22T17:12:57Z

Websense

← Older revision		Revision as of 19:12, 22 October 2018
Line 17:		Line 17:
	*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow		*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow

	= Websense =		= Websense now owned and called Forepoint =
	It accepts reg expresions with limited form example:		It accepts reg expresions with limited form example:
	<tt>(.)</tt> -same as wildcard matches any lengh of string and brackets are RegEx delimiters		<tt>(.)</tt> -same as wildcard matches any lengh of string and brackets are RegEx delimiters

2018-10-22T16:43:00Z

PCRE Perl Compatible Regular Expressions

← Older revision		Revision as of 18:43, 22 October 2018
Line 5:		Line 5:

	= PCRE Perl Compatible Regular Expressions =		= PCRE Perl Compatible Regular Expressions =
			This also covers '''Notepad ++'''
	regex like [\r\n]+ matches CRLF in Notepad ++		regex like [\r\n]+ matches CRLF in Notepad ++

			== Notetad++ ==
			Find, replace and remove matching line. Find any occurances of <code>help</help>, ending with <code>\r?\n</code>. <code>\r</code> is optional in case the file doesn't have Windows line endings.
			<source>
			Find what: ^help\r?\n
			Replace with:
			</source>
			=== Resources ===
			*[https://stackoverflow.com/questions/5876296/regex-remove-lines-containing regex-remove-lines-containing] Stackoverflow

	= Websense =		= Websense =