Remove lines that is shorter than or equal 5 characters after the : using Notepad++

Question

The question is like: Remove lines that is shorter than 5 characters before the @ using Notepad++

But it differs a bit...

I have like that:

abc

Answer 1

Open Notepad++ find and replace choose regex mode in the search and place ^((?!.+:\d{5,}).)*$ in search and keep replace with blank and press replaceAll

^((?!.+:\d{5,}).)*$