New subject: [TUHS] Will someone please explain the history and usage of gpasswd / newgrp / sg?

15 Nov 2021

3BSD has the V7 scheme, the new kernel code where there is a group list in
the process is not introduced until later/
ᐧ

On Mon, Nov 15, 2021 at 1:46 PM Henry Bent &lt;henry.r.bent(a)gmail.com&gt; wrote:

...
  On Mon, 15 Nov 2021 at 13:31, Clem Cole
&lt;clemc(a)ccc.com&gt; wrote:

  Grant,

 Mashey and crew basically did most of the original group work as part of
 PWB.   If you look at the Sixth Edition sources and the PWB 1.0 stuff, that
 is one of the places you will find differences.  With Seventh Edition (or I
 believe as part of the UNIX/TS work that Ken picked up), the Mashey group
 changes went back into the Research stream. With one of the predecessors to
 4.2BSD (it may have 4.1A or 4.1B but frankly I have forgotten) Joy
 introduced the group scheme we all use today.

  Looking at the TUHS archives, unless I'm missing something, 3BSD has
 groups that appear to be in the modern format:

 % ls -l /bsd/3bsd/etc/group
 -r--r--r-- 1 root root 44 1980-01-02 22:08 /bsd/3bsd/etc/group
 % cat /bsd/3bsd/etc/group
 staff:*:10:bill,ozalp
 grad:*:20:
 prof:*:30:
 % find . -name 'chgrp*' | xargs ls -l
 -r-xr-xr-x 1 root root 6960 Dec 30  1979 ./usr/bin/chgrp
 -r--r--r-- 1 root root   26 Feb 12  1979 ./usr/man/man1/chgrp.1
 -r--r--r-- 1 root root  754 Feb 12  1979 ./usr/src/cmd/chgrp.c

 -Henry

Re: [COFF] [TUHS] Will someone please explain the history and usage of gpasswd / newgrp / sg?