From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Tue, 31 Oct 1995 11:57:23 -0500
From: philw@plan9.att.com philw@plan9.att.com
Subject: user ID of adm
Topicbox-Message-UUID: 31d44174-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19951031165723.Hij09kr9BhQ6YrdqZ18JwsdIA2tyMbTI7VXuJ49a4BM@z>

>According to the docs, a negative id simply means that the file server
>will not allow anybody to authenicate to that id.  So the only way to
>create such a file is from the fs console, but as above, you can't.

adm is not a real user. It is a place holder for file system
admin files in /adm created during installation. It is the console
uid used by newuser etc to maintain the user database in /adm. I see no
conflict with either the description or function of adm.