Apple Mac OS X Server (Administrator’s Guide) - Manual (Page 130)

130 Chapter 3
Predefined Accounts
The following table describes the user accounts that are created automatically when you
install Mac OS X (unless otherwise indicated).
Predefined user name
Short
name
UID Use
Anonymous FTP User ftp 98 The user name given to anyone using
FTP as an anonymous user. This user is
created the first time the FTP server is
accessed if the FTP server is turned on,
if anonymous FTP access is enabled, and
if the anonymous-ftp user does not
already exist.
Macintosh Manager User mmuser -17 The user created by Macintosh
Management Server when it is first
started on a particular server. It has no
home directory, and its password is
changed periodically.
System Administrator root 0 The most powerful user.
System Services daemon 1 A legacy UNIX user.
Sendmail User smmsp 25 The user that sendmail runs as.
Unknown User unknown 99 The user that is used when the system
doesn’t know about the hard drive.
Unprivileged User nobody -2 This user was originally created so that
system services don’t have to run as
System Administrator. Now, however,
service-specific users, such as World
Wide Web Server, are often used for this
purpose.
World Wide Web Server www 70 The nonprivileged user that Apache
uses for its processes that handle
requests.
My SQL Server mysql 74 The user that the MySQL database
server uses for its processes that handle
requests.