Date: Tue, 3 Aug 2004 11:06:16 -0400 (EDT) From: Robert Watson <rwatson@freebsd.org> To: ravi <ravi.nanjundappa@ap.sony.com> Cc: Andrey Simonenko <simon@comsys.ntu-kpi.kiev.ua> Subject: Re: Regarding writing to /proc entries Message-ID: <Pine.NEB.3.96L.1040803110533.83843A-100000@fledge.watson.org> In-Reply-To: <1091526793.4761.44.camel@ravin>
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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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