UID -2 and /etc/passwd

[Guy Harris]

>He then told me that the -2 UID was needed by NFS, and showed me a page 
>from an IBM AIX/RT manual which contained the following:

And demonstrates that he misread the page in question.  In particular,
he apparently ignored the ", or unsigned 65534" part of:

>	The root user ID on the client (0) is mapped to the kernel
>	variable NOBODY (-2, or unsigned 65534) when performing file
>	operations in a mounted file system.

In SunOS 4.1, for instance, the password file entry for "nobody" has
user ID 65534, as 4.1 is POSIX-compliant and UIDs must be non-negative
in POSIX systems.