Apple Mac OS X Server (version 10.2.3 or later) - Manual (Page 127)

Users and Groups 127
The following table characterizes the group accounts that are created automatically when you
install Mac OS X Server.
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.
Predefined user name
Short
name
UID Use
Predefined
group name
Group ID Use
admin 80 The group to which users with administrator privileges
belong.
bin 7 A group that owns all binary files.
daemon 1 A group used by system services.
dialer 68 A group for controlling access to modems on a server.
guest 31
kmem 2 A legacy group used to control access to reading kernel
memory.
mail 6 The group historically used for access to local UNIX mail.
mysql 74 The group that the MySQL database server uses for its
processes that handle requests.
network 69 This group has no specific meaning.
nobody -2 A group used by system services.
nogroup -1 A group used by system services.
operator 5 This group has no specific meaning.
smmsp 25 The group used by sendmail.
LL0395.Book Page 127 Wednesday, November 20, 2002 11:44 AM