Splunk Search

Regex crash course?

Joffer
Path Finder

Can anyone recommend a good regex crash course article so I can learn how to write my (simple) whitelists and blacklists for my inputs.conf?

2 Solutions

Michael_Wilde
Splunk Employee
Splunk Employee

You might want to check out my video and some of the tools i use.

SplunkNinja - All My Regex's Live in Texas

View solution in original post

jangid
Builder
0 Karma

Alexandre_Nizou
Explorer

If you want to test your regular expressions on the spot, use the online http://www.regexpal.com/.

Take your REGEX and copy it in the first box, take the logs you are trying to match and copy them in the second box... et voila!

0 Karma

dwaddle
SplunkTrust
SplunkTrust

There's not much better on the topic than the O'Reilly book -- http://oreilly.com/catalog/9780596528126/ ... but this is not a "crash course" by any means, it is a full length discussion in great detail.

Given Splunk uses PCRE (Perl Compatible Regular Expressions) I find the "pcrepattern" man page at http://linux.die.net/man/3/pcrepattern to be a useful reference to the advanced features of PCRE.

saurabh_tek11
Communicator

Thanks @dwaddle - i was curious to know, what you answered - Splunk uses PCRE.

0 Karma

lguinn2
Legend

For people who like books, I suggest SAM's Teach Yourself Regular Expressions in 10 Minutes (Ben Forta)

It is reviewed on the regular-expressions info site http://www.regular-expressions.info/book10mins.html

0 Karma

Michael_Wilde
Splunk Employee
Splunk Employee

You might want to check out my video and some of the tools i use.

SplunkNinja - All My Regex's Live in Texas

Joffer
Path Finder

Sweet. RegexBuddy will probably help me alot 🙂

0 Karma

saurabh_tek11
Communicator

@MichaelWilde - kindly update the link, as its not opening now.

0 Karma

wollinet
Path Finder
Get Updates on the Splunk Community!

[Puzzles] Solve, Learn, Repeat: Dynamic formatting from XML events

This challenge was first posted on Slack #puzzles channelFor a previous puzzle, I needed a set of fixed-length ...

Enter the Agentic Era with Splunk AI Assistant for SPL 1.4

  🚀 Your data just got a serious AI upgrade — are you ready? Say hello to the Agentic Era with the ...

Stronger Security with Federated Search for S3, GCP SQL & Australian Threat ...

Splunk Lantern is a Splunk customer success center that provides advice from Splunk experts on valuable data ...