delete a user's login from the system
userdel [-r] [-n months] login
The userdel command deletes
a user's login definition from the system.
It removes the definition of the specified login and makes
the appropriate login-related system file and filesystem
The command also stores the user identification number
(UID) being deleted
in the /etc/security/ia/ageduid file, so
the UID will not be reused
until a period of time has passed.
This practice of keeping a UID out of use
is called UID aging.
The following options are available:
Remove the user's home directory from the system.
This directory must exist.
The files and directories under the home directory
will no longer be accessible
following successful execution of the command.
Note that the user's home directory may not be removed if the
pathname of the home directory is administered through the
Network Information Service (NIS) and NIS is unavailable at the time
you delete the user's entry.
Specify a value for the number of months
to age the UID.
Specify -1 to indicate
the UID should never be reused.
Specify 0 to indicate
the UID may be reused immediately.
If the -n option is not specified,
the UID will be aged
for a default number of months before it will be reused.
A string of printable characters
that specifies an existing login on the system.
It may not contain a colon (:)
or a newline (\n).
If login is being administered by the Network Information
Service (NIS), login will only be removed from the local
system, not the NIS database.
Whenever you use the userdel command
to delete a user's login,
you should execute adminuser -d login_name
to avoid creating any security holes;
otherwise security breaches will be introduced
when you remove logins for
users who have been added to the TFM database.
Use the desktop metaphor to remove users
who have been added through the metaphor.
Not all users have privileges
but desktop users usually do.
If a user whose login is being removed
has no privileges
and you execute adminuser -d,
you'll simply get an error message:
UX:adminuser:ERROR:Undefined user login_name
The file /etc/security/ia/audit
is not available if the
Auditing Utilities are not installed.
The userdel command
exits with a return code of 0
upon successful completion.
In case of errors, the following messages
may be displayed:
Invalid command syntax.
The login to be removed does not exist.
The login to be removed is in use.
Cannot update the /etc/group file but
the login is removed from the /etc/passwd file.
Cannot remove or otherwise modify the home directory.
© 2004 The SCO Group, Inc. All rights reserved.
UnixWare 7 Release 7.1.4 - 25 April 2004