topic Is there any online regex tool to create regular expressions for given sample data ? in Splunk Search

Is there any online regex tool to create regular expressions for given sample data ?

splunker12er — Thu, 28 Aug 2014 09:05:25 GMT

Is there any online regex tool to create regular expressions for given sample data ?

Re: Is there any online regex tool to create regular expressions for given sample data ?

RiccardoV — Thu, 28 Aug 2014 09:30:50 GMT

I think that it is more a Stack Overflow question, it isn't so much related to Splunk 🙂

BTW, you can take a look here: http://www.txt2re.com/index.php3

Re: Is there any online regex tool to create regular expressions for given sample data ?

tom_frotscher — Thu, 28 Aug 2014 09:33:17 GMT

There are tools available where you can test your created regex. They also provide short documentation for the most common regex tokens. For example here: link

Also Splunk on his own has the ability to create a regex expression based on examples. Read more here: link

Re: Is there any online regex tool to create regular expressions for given sample data ?

somesoni2 — Thu, 28 Aug 2014 13:43:30 GMT

The Field Extractor app is useful sometimes. Have a look.

http://apps.splunk.com/app/494/

Re: Is there any online regex tool to create regular expressions for given sample data ?

lmyrefelt — Wed, 17 Sep 2014 14:05:06 GMT

I belive the best tool for the job is ;

regex101.com .

Simply superb!!

Re: Is there any online regex tool to create regular expressions for given sample data ?

dimoobraznii — Fri, 19 Sep 2014 18:06:55 GMT

This is online tool: http://www.regexr.com/
This is cool interactive tutorial: http://regexone.com/ (20 exercises)

Re: Is there any online regex tool to create regular expressions for given sample data ?

mikaelbje — Thu, 23 Oct 2014 08:32:01 GMT

My favourite is: http://www.rubular.com

Fast and interactive

Re: Is there any online regex tool to create regular expressions for given sample data ?

dwaddle — Thu, 02 Apr 2015 01:48:18 GMT

If you like Regex101 (and I do), but cannot reach it from a customer site or are concerned about sending private data to the internet you can run it offline using a trick from https://github.com/Syskaw/Regex101.com-offline-app/blob/master/runLocalRegex101.sh

Re: Is there any online regex tool to create regular expressions for given sample data ?

mihnea — Fri, 26 Jun 2015 11:38:20 GMT

As a regular expression generator (log entry as input, regex as output) you can also use the one under:

http://regex.logxtender.net

It provides a generic regex with URLs, IPs, ports, usernames and so on parsed at some extent.

Re: Is there any online regex tool to create regular expressions for given sample data ?

markall — Sat, 26 Sep 2015 09:38:40 GMT

RegexGenerator++ generates a regular expression starting from given data.

Re: Is there any online regex tool to create regular expressions for given sample data ?

SAF_IT — Sat, 31 Dec 2016 00:05:03 GMT

The other sites were great for testing, but this one builds a RegEx from your Index data. Very helpful, thanks!

Re: Is there any online regex tool to create regular expressions for given sample data ?

ravikharatmal — Tue, 18 Aug 2020 03:26:39 GMT

If you want to build regex using plain simple English for your sample data & test matches also then you can use https://itsallbinary.com/simply-regex/regex-builder-tool

You can simply use plain English phrases from auto suggestions & tool will generate regex for it. You can also test generated regex right there with your sample data as asked in question. One example of capturing log statement from this tool -

_Match_anywhere_in_text_ _any_digit_ _then_ _exact_string_ ( /) _then_ _any_digit_ _then_ _exact_string_ ( /) _then_ _one_or_more_of_ ( _any_digit_) _then_ _any_whitespace_ _then_ _exact_string_ ( -) _then_ _any_whitespace_ _then_ _capture_this_ ( _one_or_more_of_ ( _as_less_as_possible_of_ _any_character_)) _then_ _any_whitespace_ _then_ _exact_string_ ( -) _then_ _capture_this_ ( _one_or_more_of_ ( _any_character_ )) _then_ _exact_string_ ( -) _then_ _capture_this_ ( _one_or_more_of_ ( _any_character_))

This generates complex regex: \d\/\d\/(?:\d)+\s\-\s((?:.)+?)\s\-((?:.)+)\-((?:.)+)

You can also test with your sample data: 6/7/2020 - MyClass - Today is Sunday and yesterday was Saturday - Success

It will match regex with your sample data & show groups:

Full Match = '6/7/2020 - MyClass - Today is Sunday and yesterday was Saturday - Success'
Group 1 = 'MyClass'
Group 2 = ' Today is Sunday and yesterday was Saturday '
Group 3 = ' Success'