Chapter 33. User and Group Configuration
The User Manager allows you to view, modify, add,
and delete local users and groups.
To use the User Manager, you must be running the X
Window System, have root privileges, and have the
system-config-users RPM package installed. To start the
User Manager from the desktop, go to
(the main menu on the
panel) => => .
Or, type the command system-config-users at a shell
prompt (for example, in an XTerm or a GNOME terminal).
Figure 33-1. User Manager
To view a list of local users on the system, click the
Users tab. To view a list of local groups on the
system, click the Groups tab.
To find a specific user or group, type the first few letters
of the name in the Search filter field. Press
[Enter] or click the Apply filter
button. The filtered list is displayed.
To sort the users or groups, click on the column name. The users or groups
are sorted by the value of that column.
Red Hat Enterprise Linux reserves user IDs below 500 for system users. By default,
User Manager does not display system
users. To view all users, including the system users, uncheck
=> from the pulldown menu.
To add a new user, click the Add User button. A
window as shown in Figure 33-2 appears. Type the
username and full name for the new user in the appropriate fields. Type
the user's password in the Password and
Confirm Password fields. The password must be at
least six characters.
The longer the user's password, the more difficult it is for an
intruder to guess it and use it to access the user's account without
permission. It is also recommended that the password not be based on a
dictionary term as well as the password be a combination of letters,
numbers, and special characters.
Select a login shell. If you are not sure which shell to select, accept
the default value of /bin/bash. The
default home directory is
/home/username/. You can
change the home directory that is created for the user, or you can choose
not to create the home directory by unselecting Create home
If you select to create the home directory, default configuration files
are copied from the /etc/skel/ directory into the
new home directory.
Red Hat Enterprise Linux uses a user private group (UPG) scheme. The
UPG scheme does not add or change anything in the standard UNIX way of
handling groups; it offers a new convention. Whenever you create
a new user, by default, a unique group with the same name as the user is
created. If you do not want to create this group, unselect
Create a private group for the user.
To specify a user ID for the user, select Specify user ID
manually. If the option is not selected, the next available
user ID starting with number 500 is assigned to the new user. Red Hat Enterprise Linux
reserves user IDs below 500 for system users.
Click OK to create the user.
To configure more advanced user properties, such as password expiration,
modify the user's properties after adding the user. Refer to Section 33.2 Modifying User Properties for more information.
To add the user to more user groups, click on the
User tab, select the user, and click
Properties. In the User
Properties window, select the Groups
tab. Select the groups that you want the user to be a member of, select
the primary group for the user, and click OK.