Date: Fri, 13 Dec 2002 14:30:52 +0100 From: Andre Albsmeier <andre.albsmeier@mchp.siemens.de> To: "Gerald T. Freymann" <freymann@scaryg.shacknet.nu> Cc: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, freebsd-questions@freebsd.org Subject: Re: How to truncate a file in the beginning Message-ID: <20021213143052.B1855@curry.mchp.siemens.de> In-Reply-To: <20021213081506.O8685-100000@scaryg.shacknet.nu>; from freymann@scaryg.shacknet.nu on Fri, Dec 13, 2002 at 08:15:22AM -0500 References: <20021213141110.A99587@curry.mchp.siemens.de> <20021213081506.O8685-100000@scaryg.shacknet.nu>
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On Fri, 13-Dec-2002 at 08:15:22 -0500, Gerald T. Freymann wrote:
> On Fri, 13 Dec 2002, Andre Albsmeier wrote:
>
> > Are there any special features in FreeBSD that I can use
> > to truncate a file in the beginning?
>
> Sure.
>
> man split
>
> should do it!
Don't think so... from the split manpage:
The split utility reads the given file and breaks it up into files of
1000 lines each. If file is a single dash (`-') or absent, split reads
from the standard input.
...
Maybe my email wasn't very clear regarding this: I can't afford to
read the 10GB (or even more) and move them to a new file (this would
have to be done on the same disk so it would take too long). I need
something that moves the start of the file to a position within the
file and discard all bytes upto that position.
I had a look at split.c but it does exactly that what I don't
need: It reads and writes...
-Andre
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