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Re: Reading huge files


From: Giorgos Keramidas
Subject: Re: Reading huge files
Date: Thu, 11 Jan 2007 00:33:51 +0200
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.92 (berkeley-unix)

On Wed, 10 Jan 2007 22:27:57 +0200, Eli Zaretskii <address@hidden> wrote:
>> From: Mathias Dahl <address@hidden>
>> Date: Wed, 10 Jan 2007 08:39:16 +0100
>> 
>> Eli Zaretskii <address@hidden> writes:
>> 
>> > If this is a 32-bit machine, then the Lisp integer overflows at
>> > 256MB.  If that's a 64-bit machine, then you don't need any tricks
>> > to edit 700MB files.
>> 
>> Okay. Then I probably never scrolled that far when I tested :)
>
> If you never scrolled past 256MB, then you indeed wouldn't notice.
>
>> I guess
>> the head + tail trick would work though, I suspect those tools does
>> not have this limitation.
>
> Yes, that should work.

FWIW, I've also uses split(1) with great success, when I had to
process *huge* log files and tcpdump output, ranging from 500 MB
to almost 1 GB of text.

Handling multi-hundred-megabyte files works fine, for instance,
with something like:

    freebsd % split -b 50m huge-file

or with:

    linux % split -b 50000000 huge-file



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