linux-kernel - Re: How to create a fixed length character/block device/file ?

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Message-ID: <20070126213514.0831856c@localhost.localdomain>
Date:	Fri, 26 Jan 2007 21:35:14 +0000
From:	Alan <alan@...rguk.ukuu.org.uk>
To:	Khai Doan <khai@...ius.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: How to create a fixed length character/block device/file ?

On Fri, 26 Jan 2007 12:10:00 -0800
Khai Doan <khai@...ius.com> wrote:

> Sorry if this is the wrong list.  I've search google, but have not found 
> solution to my problem.
> 
> I have a long running application which split out lots of debugging 
> information.  I can't redirect the output to a regular file because that 
> file would grow and eat up all the diskspace.  I can't redirect to 
> /dev/null.  What I want is the last 1MB of the output before my 
> application terminated.  

Just pipe the output into a program or perl script which does this. You
don't need a device file.
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