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Date:      Mon, 17 Dec 2001 03:56:45 -0500
From:      Anthony Schneider <aschneid@mail.slc.edu>
To:        "Brandon D. Valentine" <bandix@looksharp.net>
Cc:        Andreas Klemm <andreas@apsfilter.org>, apsfilter-hackers@apsfilter.org, freebsd-hackers@FreeBSD.ORG
Subject:   Re: aps2file doesn't work on FreeBSD
Message-ID:  <20011217035644.A40375@mail.slc.edu>
In-Reply-To: <20011217030451.V94172-100000@turtle.looksharp.net>; from bandix@looksharp.net on Mon, Dec 17, 2001 at 03:09:19AM -0500
References:  <20011216195054.A36208@mail.slc.edu> <20011217030451.V94172-100000@turtle.looksharp.net>

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Linux:

anthony:/home/anthony:9% uname -a
Linux lappy.slc.edu 2.2.17-21mdk #1 Thu Oct 5 13:16:08 CEST 2000 i686 unkno=
wn
anthony:/home/anthony:10% su
Password:=20
[root@lappy anthony]# echo $USER
root
[root@lappy anthony]# exit
anthony:/home/anthony:11% su -l
Password:=20
[root@lappy /root]# echo $USER
root
[root@lappy /root]#=20


FreeBSD:

anthony:/home/anthony:20% uname -a
FreeBSD flack.slc.edu 4.2-RELEASE FreeBSD 4.2-RELEASE #0: Mon Nov 20 13:02:=
55 GMT 2000     jkh@bento.FreeBSD.org:/usr/src/sys/compile/GENERIC  i386
anthony:/home/anthony:21% su
Password:
flack# echo $USER
anthony
flack# exit
anthony:/home/anthony:22% su -l
Password:
flack# echo $USER
root
flack# logout
anthony:/home/anthony:23%=20

=46rom 'info su' on my linux box:

   By default, `su' does not change the current directory.  It sets the
environment variables `HOME' and `SHELL' from the password entry for
USER, and if USER is not the super-user, sets `USER' and `LOGNAME' to
USER.  By default, the shell is not a login shell.

su version (on my linux box):

[root@lappy anthony]# su --version
su (GNU sh-utils) 2.0
Written by David MacKenzie.

Copyright (C) 1999 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[root@lappy anthony]#=20

Perhaps it's time to contact gnu?

-Anthony.

[ and apologies for the line wrapping ]

On Mon, Dec 17, 2001 at 03:09:19AM -0500, Brandon D. Valentine wrote:
> On Sun, 16 Dec 2001, Anthony Schneider wrote:
>=20
> >Well, the reason I brought up $USER inheritance is that on linux, $USER
> >is root after an su to root, whereas on FreeBSD, the $USER is the same
> >as before the su.
>=20
> [Line wrap at 72, please]
>=20
> Excerpt from su(1):
> ---
> By default, the environment is unmodified with the exception of USER,
> HOME, and SHELL.  HOME and SHELL are set to the target login's default
> values.  USER is set to the target login, unless the target login has a
> user ID of 0, in which case it is unmodified.  The invoked shell is the
> target login's.  This is the traditional behavior of su.
> <snip>
> -l      Simulate a full login.
> ---
>=20
> You are observing none other than the expected behavior.  I have never
> seen Linux (GNU) su do things any differently in this regard.  If they
> do, it's broken.
>=20
> Brandon D. Valentine
> --=20
> "Iam mens praetrepidans avet vagari."
> - G. Valerius Catullus, Carmina, XLVI
>=20
>=20
> To Unsubscribe: send mail to majordomo@FreeBSD.org
> with "unsubscribe freebsd-hackers" in the body of the message

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