Date: Mon, 21 Oct 2002 15:37:18 -0700 From: Kent Stewart <kstewart@owt.com> To: Lowell Gilbert <freebsd-questions-local@be-well.no-ip.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: made a mistake with bash path... now i can't login Message-ID: <3DB4819E.8000504@owt.com> References: <20021021221437.3964.qmail@web20110.mail.yahoo.com> <44wuobzaof.fsf@be-well.ilk.org>
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Lowell Gilbert wrote: > Bsd Neophyte <bsdneophyte@yahoo.com> writes: > > >>--- "DaleCo, S.P.---'the solutions people'" <daleco@daleco.biz> wrote: >> >>>Do you have a passwd for "toor"? >>> >>>KDK >> >>no... i don't... >> >>as for the -m option... >> >>i tried it but it doesn't work. >> >>-m Leave the environment unmodified. The invoked shell is your >> login shell, and no directory changes are made. As a security >> precaution, if the target user's shell is a non-standard shell >> (as defined by getusershell(3)) and the caller's real uid is non- >> zero, su will fail. >> >>can someone explain what this means? starting from the "As a security..." >>until the end. > > > "if the target user's shell is a non-standard shell": > the "target user" is root, and "non-standard" is defined in > getusershell(3) (which basically says that it has to be in > /etc/shells, which /usr/bin/bash isn't) > > "and the caller's real uid is non-zero": > this means that if you're already root, the target user's shell > doesn't have to be "standard" > > So you're out of luck. > All you have to do is boot to single user and un-fubar your system. It asks what shell and you mount your system and provide root with a good shell. You are seeing one of the reasons that many of us leave root as its default cshell. Kent -- Kent Stewart Richland, WA http://users.owt.com/kstewart/index.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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