On Thu, Sep 27, 2018 at 4:43 PM Cág <ca6c@bitmessage.ch> wrote:

Thanks for such an interesting and informative answer, Mr. Cross.

I'm happy to write it!

Dan Cross wrote:

> 4.4BSD had a convention of placing user home directories in /a, /b,
> etc.

Do I understand it correctly: they were in just "slash a/b/etc" in
root? Not /home/a or /usr/a but just /a?

Correct. I believe the idea was to program the automounter to make these appear in some directory like /home, but the directories themselves lived in /a, /b, etc. Presumably these were mount points for separate disk-resident filesystems.

> 4.4BSD-Lite also had /var/users.

Was it /var/users/$(user) or /var/$(user)?

/var/users/$user. For example, 4.4BSD-Lite1 contains entries for Ken and Dennis in /etc/master.passwd:

dmr:*:10:31::0:0:Dennis Ritchie:/var/users/guest/dmr:

ken:*:11:31::0:0:& Thompson:/var/users/guest/ken:

To everyone: thanks for all the answers, it's always interesting to read
such things. I try not to miss a single mail after signing up for the
list.

This question actually came up long ago when I first tried Plan 9,
which, as you know, has the directory in /usr, and it was released in
90s, after 4.4BSD. Of course, Plan 9 is(not) (Research) Unix, and
doesn't have a root user, and apparently has a different rationale
behind it -- if I'm not mistaken, it has bin, lib and something else
there, none of which are usually present in /home these days, even bin
is usually in /usr/local.

Plan 9 represented an opportunity to do things over. Many of us rather liked it and thought it was a worthy successor to Unix, but it never caught on in the larger world and now, in the bathed in the cold light of history, some of its faults are evident.

The issue with bin/ is that it's in several places. In plan9, these are all bound onto /bin, which is nice.

- Dan C.