Tim's solution and resource are exactly what I'm looking for, and it
worked for me perfectly.
Thanks a lot Tim and Lacis for the info!
On Oct 3, 6:10 pm, "Lacis, Alf" <alf.la...@logica.com> wrote:
> >From: vim_use@googlegroups.com [mailto:vim_use@googlegroups.com] On Behalf Of superfish
> >Sent: Tuesday, 4 October 2011 05:07
> >To: vim_use@googlegroups.com
> >Subject: How to match lines containing patternA but not containing patternB?
>
> >Facing with a data file which contains more than 7 million lines, I need to delete all >lines containing <patternA> but not containing <patternB>.
> >So far the only way I can think of is kind messy, something like this:
> >
> >:g/<patternB>/s/<patternA>/<patternC>/
> >:g/<patternA>/d
> >:%s/<patternC>/<patternA>/
> >
> >But I really like to know how this can be done in a better way, like a single global >replacement command or something.
>
>
> That seems to cover it, but you can sometimes use a screwdriver instead of pliers: faster, too. If you have Linux or Cygwin GNU tools, you can emulate what you did above, and perhaps put them into a bash script for later use. The bash command using grep & sed is, all on one line:
>
> sed -e /patternB/s/patternA/patternC/ <input.txt | grep -v patternA | sed -e s/patternC/patternA/ >output.txt
>
> Think green - keep it on the screen.
>
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