Date: Tue, 18 Nov 2014 23:32:25 -0800 From: Kevin Oberman <rkoberman@gmail.com> To: =?UTF-8?B?QnJ1bm8gTGF1esOp?= <brunolauze@msn.com> Cc: "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: reboot on wheel Message-ID: <CAN6yY1tXO-B_Ab4u9iggRJf-Vo6FHBz7SHaCFaRX-MHL2eXnUg@mail.gmail.com> In-Reply-To: <BLU179-W50B3A97CF3A7DDA8F516D9C6890@phx.gbl> References: <BLU179-W50B3A97CF3A7DDA8F516D9C6890@phx.gbl>
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On Tue, Nov 18, 2014 at 7:24 PM, Bruno Lauzé <brunolauze@msn.com> wrote: > Is there a reason for this: > > @wheeluser: rebootOperation not permitted@wheeluser: shutdown -r > nowSystem halt > What's the difference? > shutdown(8) does a clean shutdown; i.e. it runs all rc.d stop routines. Cleanly stopping some things can be critical things like database shutdown (and many other things). reboot(8) and halt(8) don't run these. They are intended as emergency tools and require root. membership inoperator is all that is required for shutdown. (Didn't realize wheel would do the trick. Or maybe your wheeladm is in the operator group, too.) It frequently surprises me how common it is for even long time FreeBSD users seem to be unaware of this and the danger of reboot/halt(8) for some systems. Of course, for many systems it will make no real difference. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkoberman@gmail.com
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