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What special characters are available for use with rex and regex and what are their functions?

Path Finder

I see a variety of letters being used like w,n,d,s etc. pls help me to understand what characters are available to use and what these characters stand for in these queries.

rex field=_raw=AnyKeyord "(?*w+)"
rex field=_raw=AnyKeyord "(?**n
+)"
regex AnyKeyord=
\d+*
regex AnyKeyord=\n+

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1 Solution

Community Manager
Community Manager

Hi @satya2p

Have you taken a look at the Splunk documentation on regular expressions? It also covers the different character types:
http://docs.splunk.com/Documentation/Splunk/6.2.1/Knowledge/AboutSplunkregularexpressions

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SplunkTrust
SplunkTrust
man pcrepattern

Path Finder

Do you have a specific task you're trying to achieve?

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SplunkTrust
SplunkTrust

Surely, me thought upon sitting to review the site of answers from Splunktonia, Surely this question would be answered? But nay, none dare tackle the daunting task of defining regex. But hark! A hero, in the distance! Although he be of simple stature, and average girth, he brought much knowledge and wisdom. He therefore sayeth: Yon @satya2p, hereupon receiving these words of written ideas, perhaps you should navigate towards the aforementioned site of destiny! http://www.regular-expressions.info/tutorial.html This "tutorial" gives many ideas and explanations that shall explain the nature of a regex and what "w", "n" and the like express! Enjoy thusly!

Path Finder

Just to follow on from the witty alacercogitatus. Another tutorial I found very handy is:
http://regexone.com/

As for testing that your regex expression is correct, check out:
https://regex101.com/

The second link I gave you I still use to this day and will continue to use it no matter how proficient I get with regex.

Community Manager
Community Manager

Hi @satya2p

Have you taken a look at the Splunk documentation on regular expressions? It also covers the different character types:
http://docs.splunk.com/Documentation/Splunk/6.2.1/Knowledge/AboutSplunkregularexpressions

View solution in original post

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