Date: Wed, 01 Mar 2006 22:20:03 -0700 (MST) From: "M. Warner Losh" <imp@bsdimp.com> To: flist@jabberwock.rinet.ru Cc: freebsd-hackers@freebsd.org, V.Ovsyannikov@kr.ru Subject: Re: unversal watchdog Message-ID: <20060301.222003.10965664.imp@bsdimp.com> In-Reply-To: <20060228042626.GA35526@stupid.rinet.ru> References: <1602933046.20060227174132@kr.ru> <20060228042626.GA35526@stupid.rinet.ru>
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In message: <20060228042626.GA35526@stupid.rinet.ru>
Alex Semenyaka <flist@jabberwock.rinet.ru> writes:
: On Mon, Feb 27, 2006 at 05:41:32PM +0700, Vitaliy Ovsyannikov wrote:
: > Hello, freebsd-hackers.
: > I've stuck with the unable to make watchdogs for daemons running via
: > startup rc-scripts. In linux we can just put the process in the
: > inittab. Does FreeBSD contains ability like this?
:
: You can do it with /etc/ttys. Actually this point is missing by many
: FreeBSD administrators, people just think of /etc/ttys in term of
: terminals and stuff :) But if youi'll open the man page you would
: found the following:
:
: The first field is normally the name of the terminal special file as it
: is found in /dev. However, it can be any arbitrary string when the asso-
: ciated command is not related to a tty.
:
: So you can perfectly run any program there and init will watch or it, just
: like in linux.
The behavior goes back to at least 4.2 BSD (not FreeBSD 4.2, but 4.2
BSD). I've used it on old SunOS 3.x boxes too...
Warner
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