Re: newbie: using su

[Corinna Vinschen <vinschen at cygnus dot com>]

Doug Wyatt wrote:
> 
> Hi,
> 
> I'm sorry, but I don't know the answers to your questions about juggling
> the /etc/passwd file.  My superficial answer would be that when you
> logon to the PC, that's who you are, unless you use the ntreskit su.exe.
> The /etc/passwd file only provides a unix-like image of the PC's
> authentication info for unix tools to use.

Correct.

> I believe the string in the GECOS field is an NT SID.

Ditto.

I suggest reading the online documentation

	http://sources.redhat.com/cygwin/docs.html

especially the ntsec chapter.

> Regards,
> Doug Wyatt
> 
> > Okay, so su doesn't work, can I just use brute force? If I ALWAYS want
> > to log on as another user (the "owner" of a particular application) and never
> > as me (my W2K login for mail etc..)
> >
> > What if I remove my entry from /etc/passwd, make a copy of the desired
> > users entry in /etc/passwd then change the name in that entry to my user
> > name (making sure this entry comes after the real users entry).  I then log
> > in as me but am now the first user.  Any side-effects that I should be aware
> > of?

The only side effect is that it won't work.

> > example:
> > desireduser::1002:513:The user I want to be,S-1-5-21-1538995194-1560047842-1096501715-1002::/bin/sh
> > me::1002:513:trendadm,S-1-5-21-1538995194-1560047842-1096501715-1002::/bin/sh
> >
> >
> > Michael
> >
> > P.S. What is that entry in the gecos field?

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                        mailto:cygwin@sources.redhat.com
Red Hat, Inc.
mailto:vinschen@cygnus.com

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