Date: Wed, 04 Aug 2004 09:38:05 +0530 From: ravi <ravi.nanjundappa@ap.sony.com> To: Robert Watson <rwatson@freebsd.org> Cc: Andrey Simonenko <simon@comsys.ntu-kpi.kiev.ua> Subject: Re: Regarding writing to /proc entries Message-ID: <1091592485.4760.1.camel@ravin> In-Reply-To: <Pine.NEB.3.96L.1040803110533.83843A-100000@fledge.watson.org> References: <Pine.NEB.3.96L.1040803110533.83843A-100000@fledge.watson.org>
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I tried with echo -n as well . But even then the same error messge is coming . Please tell me the solution . On Tue, 2004-08-03 at 20:36, Robert Watson wrote: > On Tue, 3 Aug 2004, ravi wrote: > > > The README file in /sys/fs/procfs directory says that we can send the > > control messages to note or ctl files for any process . But when we > > execute the command > > > > echo hup > /proc/curproc/note > > > > OR > > echo attach > /proc/2/ctl > > It may be because you're writing the word and a line feed, and it could > be > our note file doesn't know what to do with the line feed. Try "echo -n" > > instead? > > Robert N M Watson FreeBSD Core Team, TrustedBSD Projects > robert@fledge.watson.org Principal Research Scientist, McAfee > Research > > > > > > the following error message comes on the terminal . > > > > $ echo hup > /proc/curproc/note > > /proc/curproc/note: Operation not supported > > > > and > > > > $ echo attach > /proc/2/ctl > > /proc/2/ctl: Operation not supported > > > > > > > > What is the reason for this ? > > > > Is it not possible to write the control words or control messages to > the > > process entries under /proc ? > > > > Please reply to this mail . > > > > Regards, > > N Ravi > > > > > > > > > > >
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