Notepad ++: deleting all lines of text without the occurrence of a substring - can it?

Question

Notepad++

Good day.
Tell me: is it possible in Notepad ++ (perhaps in one of its versions) to delete all lines that do not contain an occurrence of a given substring? If yes, please tell me how it is done.
Otherwise, I would be grateful for information about another text editor that has similar capabilities.

Answer 1

other text editor that has similar features

cat "file.txt" | grep "my-string" > filtered.txt