Userid/passwords

[Matthias Urlichs]

Hi,
>  user name
>  A string that is used to identify a user, as described in user database . To
>  be portable across XSI-conformant systems, the value must be composed of
>  characters from the portable filename character set. The hyphen should not
>  be used as the first character of a portable user name.
>
Note that using a dot in user names isn't a good idea. Think "chown 
foo.bar FILE".
-- 
Matthias Urlichs