Notepad++ regex -> newLine

Question

I use Notepad++ and I need to delete all lines starting with, say "abc".

Attention, I don't need to replace the line starting with "abc" with a empty line, but I need to completely delete these lines.

How do I proceed (using regex, I suppose)?

Answer 1

Try replace

^abc.*(\r?\n)?

with

nothing

The ^ indicates the start of a line.

The . means wild-card.

The .* means zero or more wild-cards.

x? means x is optional.

The \r?\n covers both \r\n (generally Windows) and \n (generally Unix), but must be optional to cover the last line.