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System Administration Commands useradd(1M)
NAME
useradd - administer a new user login on the system
SYNOPSIS
useradd [-c comment] [-d dir] [-e expire] [-f inactive] [-
g group] [ -G group [ , group...]] [ -m [-k skel_dir]] [
-u uid [-o]] [-s shell] [-A authorization [,authoriza-
tion...]] [-P profile [,profile...]] [-R role [,role...]]
[-p projname] [-K key=value] login
useradd -D [-b base_dir] [-e expire] [-f inactive] [-
g group] [-A authorization [,authorization...]] [-P profile
[,profile...]] [-R role [,role...]] [-p projname] [-K
key=value]
DESCRIPTION
useradd adds a new user to the /etc/passwd and /etc/shadow
and /etc/user_attr files. The -A and -P options respectively
assign authorizations and profiles to the user. The -R
option assigns roles to a user. The -p option associates a
project with a user. The -K option adds a key=value pair to
/etc/user_attr for the user. Multiple key=value pairs may be
added with multiple -K options.
useradd also creates supplementary group memberships for the
user (-G option) and creates the home directory (-m option)
for the user if requested. The new login remains locked
until the passwd(1) command is executed.
Specifying useradd -D with the -g, -b, -f, -e, -A, -P, -p,
-R, or -K option (or any combination of these options) sets
the default values for the respective fields. See the -D
option, below. Subsequent useradd commands without the -D
option use these arguments.
The system file entries created with this command have a
limit of 512 characters per line. Specifying long arguments
to several options can exceed this limit.
useradd requires that usernames be in the format described
in passwd(4). A warning message is displayed if these res-
trictions are not met. See passwd(4) for the requirements
for usernames.
OPTIONS
The following options are supported:
-A authorization
One or more comma separated authorizations defined in
auth_attr(4). Only a user or role who has grant rights
to the authorization can assign it to an account.
SunOS 5.10 Last change: 21 Feb 2006 1
System Administration Commands useradd(1M)
-b base_dir
The default base directory for the system if -d dir is
not specified. base_dir is concatenated with the account
name to define the home directory. If the -m option is
not used, base_dir must exist.
-c comment
Any text string. It is generally a short description of
the login, and is currently used as the field for the
user's full name. This information is stored in the
user's /etc/passwd entry.
-d dir
The home directory of the new user. It defaults to
base_dir/account_name, where base_dir is the base direc-
tory for new login home directories and account_name is
the new login name.
-D
Display the default values for group, base_dir,
skel_dir, shell, inactive, expire, proj, projname and
key=value pairs. When used with the -g, -b, -f, -e, -A,
-P, -p, -R, or -K options, the -D option sets the
default values for the specified fields. The default
values are:
group other (GID of 1)
base_dir /home
skel_dir /etc/skel
shell /bin/sh
SunOS 5.10 Last change: 21 Feb 2006 2
System Administration Commands useradd(1M)
inactive 0
expire null
auths null
profiles null
proj 3
projname default
key=value (pairsnotfpresent user_attr(4)
roles null
-e expire
Specify the expiration date for a login. After this
date, no user will be able to access this login. The
expire option argument is a date entered using one of
the date formats included in the template file
/etc/datemsk. See getdate(3C).
If the date format that you choose includes spaces, it
must be quoted. For example, you can enter 10/6/90 or
"October 6, 1990". A null value (" ") defeats the status
of the expired date. This option is useful for creating
temporary logins.
-f inactive
The maximum number of days allowed between uses of a
login ID before that ID is declared invalid. Normal
SunOS 5.10 Last change: 21 Feb 2006 3
System Administration Commands useradd(1M)
values are positive integers. A value of 0 defeats the
status.
-g group
An existing group's integer ID or character-string name.
Without the -D option, it defines the new user's primary
group membership and defaults to the default group. You
can reset this default value by invoking useradd -D -g
group.
-G group
An existing group's integer ID or character-string name.
It defines the new user's supplementary group member-
ship. Duplicates between group with the -g and -G
options are ignored. No more than NGROUPS_MAX groups can
be specified.
-K key=value
A key=value pair to add to the user's attributes. Multi-
ple -K options may be used to add multiple key=value
pairs. The generic -K option with the appropriate key
may be used instead of the specific implied key options
(-A, -P, -R, -p). See user_attr(4) for a list of valid
key=value pairs. The "type" key is not a valid key for
this option. Keys may not be repeated.
-k skel_dir
A directory that contains skeleton information (such as
.profile) that can be copied into a new user's home
directory. This directory must already exist. The system
provides the /etc/skel directory that can be used for
this purpose.
-m
Create the new user's home directory if it does not
already exist. If the directory already exists, it must
have read, write, and execute permissions by group,
SunOS 5.10 Last change: 21 Feb 2006 4
System Administration Commands useradd(1M)
where group is the user's primary group.
-o
This option allows a UID to be duplicated (non-unique).
-P profile
One or more comma-separated execution profiles defined
in prof_attr(4).
-p projname
Name of the project with which the added user is associ-
ated. See the projname field as defined in project(4).
-R role
One or more comma-separated execution profiles defined
in user_attr(4). Roles cannot be assigned to other
roles.
-s shell
Full pathname of the program used as the user's shell on
login. It defaults to an empty field causing the system
to use /bin/sh as the default. The value of shell must
be a valid executable file.
-u uid
The UID of the new user. This UID must be a non-negative
decimal integer below MAXUID as defined in
<sys/param.h>. The UID defaults to the next available
(unique) number above the highest number currently
assigned. For example, if UIDs 100, 105, and 200 are
assigned, the next default UID number will be 201. (UIDs
from 0-99 are reserved for possible use in future appli-
cations.)
SunOS 5.10 Last change: 21 Feb 2006 5
System Administration Commands useradd(1M)
FILES
/etc/datemsk
/etc/passwd
/etc/shadow
/etc/group
/etc/skel
/usr/include/limits.h
/etc/user_attr
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
| Interface Stability | Evolving |
|_____________________________|_____________________________|
SEE ALSO
passwd(1), profiles(1), roles(1), users(1B), groupadd(1M),
groupdel(1M), groupmod(1M), grpck(1M), logins(1M), pwck(1M),
userdel(1M), usermod(1M), getdate(3C), auth_attr(4),
passwd(4), prof_attr(4), project(4), user_attr(4), attri-
butes(5)
DIAGNOSTICS
In case of an error, useradd prints an error message and
exits with a non-zero status.
The following indicates that login specified is already in
use:
UX: useradd: ERROR: login is already in use. Choose another.
The following indicates that the uid specified with the -u
option is not unique:
UX: useradd: ERROR: uid uid is already in use. Choose another.
The following indicates that the group specified with the -g
option is already in use:
SunOS 5.10 Last change: 21 Feb 2006 6
System Administration Commands useradd(1M)
UX: useradd: ERROR: group group does not exist. Choose another.
The following indicates that the uid specified with the -u
option is in the range of reserved UIDs (from 0-99):
UX: useradd: WARNING: uid uid is reserved.
The following indicates that the uid specified with the -u
option exceeds MAXUID as defined in <sys/param.h>:
UX: useradd: ERROR: uid uid is too big. Choose another.
The following indicates that the /etc/passwd or /etc/shadow
files do not exist:
UX: useradd: ERROR: Cannot update system files - login cannot be created.
NOTES
The useradd utility adds definitions to only the local
/etc/group, etc/passwd, /etc/passwd, /etc/shadow,
/etc/project, and /etc/user_attr files. If a network name
service such as NIS or NIS+ is being used to supplement the
local /etc/passwd file with additional entries, useradd can-
not change information supplied by the network name service.
However useradd will verify the uniqueness of the user name
(or role) and user id and the existence of any group names
specified against the external name service.
SunOS 5.10 Last change: 21 Feb 2006 7
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This page was generated on Wed Sep 12 11:26:47 GMT 2007
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