Regex to find substring out of string

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Account For Which Logon Failed:\s*.*\s*Account Name:\s*(.+?)"

Above regex giving me result as : Account For Which Logon Failed: Account Name:Test123 Account Domain:aaa Source Network Address:0.0.0.0"

Now want to find substring from above resultset to get the string "Account Name:Test123" by another regex.

What I have tried:

Account For Which Logon Failed:\s*.*\s*Account Name:\s*(.+?)"

Posted 16-Apr-21 4:35am

Sakshi Sinha 2021

Updated 17-Apr-21 4:44am

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OriginalGriff · Answer 1 · 2021-04-16T04:50:00

Solution 1

Use the Groups feature: they include "Match Prefix but exclude it" and "Match Suffix but exclude it":

(?<=Account\sFor\sWhich\sLogon\sFailed:\s*)Account\sName:\s*(.+?)(?=\s*Account\sDomain:)

Posted 16-Apr-21 4:50am

OriginalGriff

Patrice T · Answer 2 · 2021-04-17T04:44:00

Just a few interesting links to help building and debugging RegEx.
Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx: Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]
This site also show the Regex in a nice graph but can't test what match the RegEx: Regexper[^]