[ale] FGrep matches and non matches to two seperate files

[Jonathan Chum]

Sorta of, but that would require one additional process to run to invert the
list. 

For example, I have 25 MB Postfix log file which I've wrote a script that
extracts the IDs for a specific from <> address, then use fgrep to extract
the logs specific to that domain. 

That process takes about 5 minutes to process 17,000 unique IDs. 

If I use the -v invert, then it's another 5 minutes to generate a new list.
I figure that if fgrep scans a file line by line for a match, there would be
a way to process those that didn't match into another file to save time from
re-processing the script.

If there's not a utility to do this, I could write the procedure in Perl
that replicated what fgrep does, but I wanted to be sure that there isn't a
utility out there already.

Regards,
Jonathan Chum
Senior Developer

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
AIS Media, Inc. - "Passion. Innovation. Expertise"
7000 Central Parkway, Suite 1700
Atlanta, GA 30328
Tel: 770.350.7998 / Fax: 770.350.9409
http://www.aismedia.com / jchum at aismedia.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Greg
To: ale at ale.org
Freemyer
Sent: Thursday, December 22, 2005 2:16 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] FGrep matches and non matches to two seperate files

Are you just asking about "fgrep -v" ?

On 12/22/05, Jonathan Chum <jchum at aismedia.com> wrote:
>
>
>
> I have a list of PostFix IDs in a file that I'm able to fgrep the initial
> maillog and return all entries matching the IDs in the list. I'd like to
> create two files with it though, one that contains the new maillog that
> matches the IDs listed in the file and another file that contains the old
> maillog without these lines.
>
>
>
> Any idea how I would go about accomplishing this? Thanks.
>
>
>
> Regards,
>  Jonathan Chum
>  Senior Developer
>
>
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>  AIS Media, Inc. - "Passion. Innovation. Expertise"
>  7000 Central Parkway, Suite 1700
>  Atlanta, GA 30328
>  Tel: 770.350.7998 / Fax: 770.350.9409
>  http://www.aismedia.com / jchum at aismedia.com
>  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
>
>


--
Greg Freemyer
The Norcross Group
Forensics for the 21st Century
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