notepad++


How do I mass delete lines out of Notepad++ except for ones with specific characters?


is there also a way to delete every line that doesn't have a specific character in it? For example delete every line that doesnt include the character #:
1234 (delete)
5678 (delete)
#901 (keep)
2345 (delete)
12#5 (keep)
6789 (delete)
I think you get the idea, would be very helpful if someone could tell me :)

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