From: "H. Peter Anvin" <hpa@zytor.com>
To: Khai Doan <khai@genius.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to create a fixed length character/block device/file ?
Date: Fri, 26 Jan 2007 12:49:37 -0800 [thread overview]
Message-ID: <45BA6961.2060307@zytor.com> (raw)
In-Reply-To: <45BA6018.5040406@genius.com>
Khai Doan 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. So I need to create a special file / device on
> the system. Please tell me if there is an existing device that I can
> use, or point me in the right direction so that I can role my own device.
>
Create a FIFO (see "man mkfifo"), and write a program that reads the
FIFO and retains the information you're interested in.
-hpa
next prev parent reply other threads:[~2007-01-26 20:50 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-26 20:10 How to create a fixed length character/block device/file ? Khai Doan
2007-01-26 20:49 ` H. Peter Anvin [this message]
2007-01-26 20:50 ` H. Peter Anvin
2007-01-26 20:50 ` Phillip Susi
2007-01-26 21:04 ` Jiri Slaby
2007-01-26 21:35 ` Alan
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