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Date:      Fri, 31 May 1996 13:17:44 +0200 (MET DST)
From:      "Georg-W. Koltermann" <gwk@racer.dkrz.de>
To:        eischen@vigrid.com
Cc:        kuku@gilberto.physik.rwth-aachen.de, michaelv@HeadCandy.com, freebsd-hackers@freefall.freebsd.org
Subject:   Re: newgrp(1)
Message-ID:  <199605311117.NAA20060@racer.dkrz.de>
In-Reply-To: <9605302018.AA11531@pcnet1.pcnet.com> (eischen@vigrid.com)
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>>>>> "Daniel" == Daniel Eischen <eischen@vigrid.com> writes:
    Daniel>
    Daniel>  The problem is not when you want to reference files that
    Daniel> already exist, but when you want to create files with a
    Daniel> specific group so that only others in that group can
    Daniel> reference them.
    Daniel> 
    Daniel> We use the newgrp command on our HP systems for various
    Daniel> projects with multiple developers.  Each project usually
    Daniel> usually has at least one group associated with it.  By
    Daniel> using newgrp before we start any processes that can create
    Daniel> files, we're assured that the files have the correct
    Daniel> permissions (group).  GUI-based systems, like Interleaf,
    Daniel> Atria ClearCase, compilers, etc, can then be used to
    Daniel> create files with the correct group.  This is really
    Daniel> important when you're not granted root permissions on the
    Daniel> systems; you can't hunt around and manually set the group
    Daniel> on all files in the project directory because you don't
    Daniel> own them.
    Daniel> 
    Daniel> Unless there's another way of doing this in FreeBSD, I'd
    Daniel> like to see the newgrp command brought in.  My $.02.
    Daniel> 
    Daniel> Dan Eischen eischen@pcnet.com
    Daniel> 

This is BSD.  New files inherit the group OF THE DIRECTORY WHERE THEY
ARE CREATED [as long as the group of that directory is in the
authorized group list of the creating process].  To the contrary, on
SysV new files inherit the primary group of the creating process.

I would still believe that you don't need newgrp(1).

Georg-W. Koltermann, gwk@cray.com

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