Efficient Regular Expressions with applications in Splunk

Fast regex creation from simple patterns to positive look-aheads

Created by : Rated :4.2 68039 views

Last Updated: 2022-08-09 01:08:13 English Course Type: Self Learning

Regular Expressions
Basic Splunk applications of regular expressions

In this course, you will learn to apply regular expressions to search, filter, extract and mask data efficiently and effectively in Splunk following a workshop format on real data.

Regular expressions enable (with good crafting) very efficient and effective parsing of text for patterns. The most important skills for regex lie in pattern recognition, regex technique mastery, and simplicity for "step" minimization. The simpler regex with solid leading anchors tends to be the more efficient. Increased regex understanding enables access to more effective techniques for keeping it simple. Pattern recognition connects regex code to solve the problem.

We will rely on the regex101 website to assist in crafting, verifying and explaining the process. Splunk will be used to showcase practical applications with big data. A test after the main course section will test some of the more basic levels of understanding

Understand pattern recognition

Splunk users, admins, and developers
Schema developers
Programmers
Data miners

Section 1 : Unpublished Section 3 Lectures 00:26:41
Lecture 1 :
Introduction to Regular Expressions (regex) Preview
Introducing you to the instructor, Andrew Landen, and the course, Efficient Regular Expressions with applications in Splunk.
Lecture 2 :
Introduction to Instructor and Course
Lecture 3 :
Splunk Introduction
Section 2 : Regex Best Practices 8 Lectures 01:13:14
Lecture 1 :
Regex101 and regex introduction
Lecture 2 :
Back references and lazy/greedy matching (examples)
Lecture 3 :
Back references, group iterations, and look arounds (examples)
Lecture 4 :
Branch Reset Groups
Lecture 5 :
Avoiding Explosive quantifiers with Possessive quantifiers and atomic groups
Lecture 6 :
Application of the Explosive Quantifier lesson
Lecture 7 :
Using Positional Anchors and Custom Boundaries
Lecture 8 :
Advanced Regex Concepts
Review advanced regex concepts
Section 3 : Regex in Splunk 7 Lectures 01:25:27
Lecture 1 :
Using Splunk to extract, mask, and filter at the SPL search line
Lecture 2 :
Using the auto-extract tool and managing the field extraction knowledge object
Lecture 3 :
Using sed in Splunk to do character substitution
Lecture 4 :
Multiple simultaneous automatic field extractions in Splunk
Lecture 5 :
Multi-match in Splunk
Lecture 6 :
Recursion
Lecture 7 :
Extracting Fields in Splunk from Configuration Files

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