Date: Mon, 22 Dec 2003 11:31:42 -0800 From: "Mark McConnell" <markmc@tisimaging.com> To: freebsd-questions@Freebsd.org Subject: Re: bad root shell Message-ID: <3FE6D61E.1090.5A243B@localhost> In-Reply-To: <pan.2003.12.21.04.32.20.822616@sremick.net>
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su -m only works when you have a bad shell, if your uid is 0
su(1)
-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.
But otherwise, yours would be the right answer, I believe.
Mark
--
On 20 Dec 2003 at 23:32, Scott I. Remick wrote:
{Re: bad root shell...}:
> On Sat, 20 Dec 2003 09:44:17 -0800, Mark McConnell wrote:
>
> > An error in a pw* script inserted a non-existent shell into the password
> > database, effectively locking out root.
> >
> > I used a fixit disk to correct the problem, using this procedure:
>
> Unless I'm missing something, seems like the long way to do this. Last
> time I did this to myself, I did the following:
>
> 1) Log in as a user who can su to root.
> 2) Use su -m to su to root without changing your current shell
> 3) As root, use chpass -s to change your shell to a working one.
>
> Of course, this won't work if your only account is "root" or you don't
> have anyone else in the wheel group, so maybe it doesn't apply to you.
>
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Mark McConnell - Portland, OR
Technical Imaging Systems
markmc@tisimaging.com
503-546-0517
mkmcconn@hevanet.com
503-257-7591
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