How do I use regex extract a string but not when it contains $

Question

I need to extract a username direct from logs using regex but not when the username ends with $, example log below:

Username: domain\username

I've been using the following regex to extract data-Username:.*?\\(.*?\s

I need regex to completely ignore the string and not extract it if it ends with $

Is this possible?

Answer 1

Search for a text and any non-$-sign at the end:

Username: (.*[^\$])$

http://regexr.com/3aail