Date: Tue, 27 Oct 1998 23:13:26 +0000 From: Bob Bishop <rb@gid.co.uk> To: Alfred Perlstein <bright@hotjobs.com> Cc: Marius Bendiksen <Marius.Bendiksen@scancall.no>, "Ron G. Minnich" <rminnich@Sarnoff.COM>, hackers@FreeBSD.ORG Subject: Re: dropping to single user mode on a telnet connection Message-ID: <l03020907b25c00e28daa@[194.32.164.2]> In-Reply-To: <Pine.BSF.4.05.9810271052390.319-100000@porkfriedrice.ny.genx.net> References: <3.0.5.32.19981027164356.0090a7c0@mail.scancall.no>
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Hi, At 11:00 am -0500 27/10/98, Alfred Perlstein wrote: >On Tue, 27 Oct 1998, Marius Bendiksen wrote: > >> >Interesting idea passed to me by john degood, who used to work at hp. >> >> Indeed. This is a quite interesting idea. >> >> >On hpux, when you drop to single user via a telnet connection, it leaves >> >the connection open.[etc] The classical way to do this (SysVr2 IIRC) is to have console output go to /dev/syscon, which gets (hard) linked to whichever device is appropriate when the music stops (often /dev/console). This means that kernel internals have to access the console by name not via maj/min 0/0. Care is required: you don't want the console attached to a vty or pty en route for a reboot, for instance. -- Bob Bishop (0118) 977 4017 international code +44 118 rb@gid.co.uk fax (0118) 989 4254 between 0800 and 1800 UK To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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