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useradd新建的用户默认密码是什么
Maintenance 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 [ ,authorization... ] ] [
-P profile [ ,profile... ] ] [ -R role [ ,role... ] ]
login
useradd -D [ -b base_dir ] [ -e expire ] [ -f inactive ]
[ -g group ]
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.
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, or -R
option (or any combination of these options) sets the
default values for the respective fields. See the -D option.
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.
The login (login) and role (role) fields accept a string of
no more than eight bytes consisting of characters from the
set of alphabetic characters, numeric characters, period
(.), underscore (_), and hyphen (-). The first character
should be alphabetic and the field should contain at least
one lower case alphabetic character. A warning message will
be written if these restrictions are not met. A future
Solaris release may refuse to accept login and role fields
that do not meet these requirements.
The login and role fields must contain at least one charac-
ter and must not contain a colon ( or a newline (\n).
OPTIONS
The following options are supported:
-A authorization
SunOS 5.8 Last change: 24 Sep 1999 1
Maintenance Commands useradd(1M)
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.
-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
directory 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, and expire. When used with
the -g, -b, -f, -e, -A, -P, or -R 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
inactive
0
expire
Null
auths Null
profiles
Null
roles Null
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Maintenance Commands useradd(1M)
-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
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
membership. Duplicates between group with the -g and
-G options are ignored. No more than NGROUPS_MAX
groups can be specified.
-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, 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).
SunOS 5.8 Last change: 24 Sep 1999 3
Maintenance Commands useradd(1M)
-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 applications.)
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 |
|_____________________________|_____________________________|
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), user_attr(4), attributes(5)
SunOS 5.8 Last change: 24 Sep 1999 4
Maintenance Commands useradd(1M)
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:
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 only adds definitions to the local
/etc/group, etc/passwd, /etc/passwd, /etc/shadow and
/etc/user_attr files. If a network nameservice such as NIS
or NIS+ is being used to supplement the local /etc/passwd
file with additional entries, useradd cannot change informa-
tion supplied by the network nameservice. 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 nameservice.
SunOS 5.8 Last change: 24 Sep 1999 5 |
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发表于 2003-10-31 16:35
