Regular Expressions 101

Explanation

Pro

Group 1(New Logon:)

New Logon:the literal text New Logon: (case sensitive)

Group 2(.*\n+.*\n+.|[\r\n\w:\s-]+)

1st Alternative.*\n+.*\n+.

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.any character (except for line terminators)

2nd Alternative[\r\n\w:\s-]+

Character Class[\r\n\w:\s-]+

+matches at least one character from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

\wany word character

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Account Name:the literal text Account Name: (case sensitive)

\s+any whitespace character, repeated at least once

Group 3((?i)\b(?!System)[a-zA-Z0-9]+)

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

\ban ASCII word boundary

Negative Lookahead(?!System)

Systemthe literal text System (case insensitive)

Character Class[a-zA-Z0-9]+

+matches at least one character from the set below:

a-zone character from a (97₁₀) to z (122₁₀) (case insensitive)

A-Zone character from A (65₁₀) to Z (90₁₀) (case insensitive)

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Group 4(.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+)

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

Group 5(Network Information:)

Network Information:the literal text Network Information: (case sensitive)

Group 6(.*\n+.*\n+.|[\r\n\w:\s-]+)

1st Alternative.*\n+.*\n+.

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.*any character (except for line terminators), repeated any number of times

\n+a line-feed (newline) character (ASCII 10), repeated at least once

.any character (except for line terminators)

2nd Alternative[\r\n\w:\s-]+

Character Class[\r\n\w:\s-]+

+matches at least one character from the set below:

\ra carriage return (ASCII 13)

\na line-feed (newline) character (ASCII 10)

\wany word character

:the literal : (58₁₀ / 72₈ / 3A₁₆)

\sany whitespace character

-the literal - (45₁₀ / 55₈ / 2D₁₆)

Source Network Address:the literal text Source Network Address: (case sensitive)

\s+any whitespace character, repeated at least once

Group 7((?i)\b(?!System)[\w.]+)

(?i)applies the following effective flags to the remainder of the pattern: gmi

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

\ban ASCII word boundary

Negative Lookahead(?!System)

Systemthe literal text System (case insensitive)

Character Class[\w.]+

+matches at least one character from the set below:

\wany word character

.the literal . (46₁₀ / 56₈ / 2E₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Unit Test Summary

No unit tests

Add a test to get started

Quick Reference

25 tokens

Regular Expression

(New Logon:)(.*\n+.*\n+.|[\r\n\w:\s-]+)Account Name:\s+((?i)\b(?!System)[a-zA-Z0-9]+)(.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+.*\n+)(Network Information:)(.*\n+.*\n+.|[\r\n\w:\s-]+)Source Network Address:\s+((?i)\b(?!System)[\w.]+)

Unit Tests

There are no unit tests.