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userdel(8)
NAME
userdel - Deletes a user login account from the system.
SYNOPSIS
/usr/sbin/userdel [-r] [-R] [-t type] [-P] [-x extended_option] login
OPTIONS
-r Removes a user's home directory from the system. This directory must
exist and must be owned by the user whose login account is being
deleted.
-R When enhanced security is enabled, retires the account without deleting
entries from the databases or removing home directories.
-t type
Removes a local plus (+) or local minus (-) NIS user from the user
database. The value of the type parameter can be + or -.
-P Removes PC accounts only, without deleting the user's existing UNIX
account.
-x extended_option
The following extended_option attributes are available:
distributed=0|1
Indicates whether or not the account is distributed. The value of
the distributed=n attribute can be 0 or 1. If set to 0, the account
is deleted from the local database. If set to 1, the account is
deleted from the NIS master database on the running system. When
this attribute is set, the local attribute is set to the opposite
value.
local=0|1
Indicates whether or not the account is local. The value of the
local=n attribute can be 0 or 1. If set to 1, the account is
deleted from the local database. If set to 0, the account
information is deleted from the NIS master database. When this
attribute is set, the distributed attribute is set to the opposite
value.
pc_synchronize=0|1
The value of the pc_synchronize=n attribute can be 0 or 1. If set
to 1, both PC and UNIX accounts will be affected by delete
operations. If set to 0, only UNIX accounts will be affected by
delete operations and the PC account will be unaffected.
login
Specifies an existing login account on the system.
DESCRIPTION
The userdel command is part of a set of command-line interfaces (CLI) that
are used to create and administer user accounts on the system. When The
Advanced Server for UNIX (ASDU) is installed and running, the userdel
command can also be used to administer PC accounts. Accounts can also be
administered with the /usr/bin/X11/dxaccounts graphical user interface
(GUI), although the extended options are only available from the CLI
utilities such as useradd and usermod.
Different options are available depending on how the local system is
configured:
· In the default UNIX environment, user account management is compliant
with the IEEE POSIX Draft P13873.3 standard.
· If enhanced (C2) security is configured, additional options and
extended options can be used.
· The CLI is backwards-compatible, so all existing local scripts will
function. However, you should consider testing your account
management scripts before using them.
The userdel command deletes a user's login account from the system and
makes the login-related changes in the appropriate system files determined
by the current level of security. Additionally, the files and directories
contained under the user's home directory can be removed from the system.
With the -x option, the system administrator can specify whether the user
login account to be deleted is local or whether it resides in the NIS
master database. If the -x option is not specified, the user login account
is deleted from the appropriate database as specified by the system
defaults.
The default behavior on the system for the userdel command is distributed=0
and local=1. With these values, the system deletes the group from the
local database by default. Setting the distributed= and local= attributes
to the same value (for example, distributed=0 and local=0) produces an
error.
You must have superuser privilege to execute this command.
EXIT STATUS
The userdel command exits with one of the following values:
0 Success.
1 Failure.
2 Warning.
EXAMPLES
1. The following example removes the local plus (+) user, newuser1:
% userdel -t + newuser1
2. The following example removes the NIS user, newuser4, from the NIS
master database:
% userdel -x distributed=1 newuser4
3. The following example deletes the user, xyz, and removes the user's
home directory:
% userdel -r xyz
4. The following example deletes the UNIX account for studentB, removing
the home directory and its corresponding PC account.
% userdel -r -x pc_synchronize=1 studentB
FILES
The userdel command operates on files for the specific level of system
security.
SEE ALSO
Commands: groupadd(8), groupdel(8), groupmod(8), useradd(8), usermod(8)
System Administration
Security
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Index for Section 8 |
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Alphabetical listing for U |
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Top of page |
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