[X-Unix] Any CLI multi-line regex find utilities out there?

[James Avgeris]

On Oct 27, 2004, at 5:11 AM, Kuestner, Bjoern wrote:

> You could maybe pipe it through sed first and remove all the line 
> breaks,
> then keep the pipe going to grep and to the usual magic.
>
> Björn

Does anyone know how to capture newlines with sed? I'm thinking:

cat file.txt | sed "s/\n/ /g" | grep blah...

(But this doesn't work: \n isn't matching newlines.)