On Mon 29 Mar 2021 at 00:45:28 (+0200), l0f...@tuta.io wrote: > 28 mars 2021, 21:27 de deb...@lionunicorn.co.uk: > > > When you've used > > & pattern > > to display lines containing your pattern, then > > | . grep pattern > filename > > will apply the same filter to the lines selected by | ., where > > I've used . but you could use ^ or $ or a mark instead, as > > appropriate. > > > Indeed, I had noticed that (and even placed myself at the very beginning of > the input and used "| $" instead in order to select everything). > > However, I was wondering if there was an alternative when one doesn't need to > reenter the same pattern twice for such a basic need... > > No easy condensed way for that? :)
It's not a workflow that I'm in the habit of using, but anyway, having come up with a pattern that's producing the lines you're interested in, I would: . type & again, . UpArrow to recall this latest pattern that you're happy with, . LeftDrag the mouse to copy the pattern, . Backspace to rubout the line (the & remains there), . type | and respond appropriately to the mark: prompt, . type your shell command: . grep ' . paste the pattern with whichever button you use . ' > filename Using the ' quote will cater for most patterns, though you might have to adjust for any backslashes in the pattern, and so on, using Left/RightArrow, or even use " if the pattern itself contains ' characters. I tend to paste with Shift-Insert (needs less hand-eye coordination). Cheers, David.
