07-20-2007
Password limitations.
I would like to set my minimum password length to on Linux and AIX.
However, doing this normally would only make it so newly added users will be affected by this. I would like for when I make this change, it either truncates everyone elses password, or prompts them to change it to 8+ characters.
Is this possible?????
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LEARN ABOUT CENTOS
luseradd
luseradd(1) General Commands Manual luseradd(1)
NAME
luseradd - Add an user
SYNOPSIS
luseradd [OPTION]... user
DESCRIPTION
Adds an user with name user.
OPTIONS
-c, --gecos=gecos
Set the GECOS field to gecos. The GECOS field is traditionally used to store user's real name and other information.
-d, --directory=directory
Set user's home directory to directory. If this option is not present, a default specified by libuser configuration is used.
-g, --gid=group
Set user's primary group to group. group can either be a group ID of an existing group, or a group name; if group is a group name
and the group does not exist, it is created. If the --gid option is not specified, the default group name is user.
-i, --interactive
Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration.
-k, --skeleton=directory
Populate the newly created user's home directory with a copy of directory. If this option is not present, a default directory spec-
ified by libuser configuration, or /etc/skel if libuser configuration does not specify a default, is used.
-M, --nocreatehome
Don't create a home directory and a mail spool for the newly created user.
-n, --nocreategroup
If a group is not specified using -g, use group name "users" instead of user. Note that despite the name of the option, the group
will still be created if it does not exist.
-P, --plainpassword=password
Set user's password to password. Note that the password can be viewed while running luseradd using tools such as ps(1).
-p, --password=encrypted
Set user's password to the password represented by the hash encrypted. Note that the hash can be viewed while running luseradd
using tools such as ps(1).
-r, --reserved
The user is a system user. Users that are not marked as system user usually have automatically selected user IDs above a certain
value (configured as LU_UIDNUMBER in libuser.conf(5)). This information is also passed to the libuser backends. This option
implies the -M option.
-s, --shell=shell
Set user's login shell to shell. If this option is not present, a default specified by libuser configuration is used.
-u, --uid=uid
Use user ID uid for the newly created user. An user ID is selected automatically if this option is not present.
--commonname=name
Use common name name for the newly created user. This attribute is only supported in some backends (e.g.LDAP), and its support may
have further limitations (e.g. LDAP schema rules).
--givenname=name
Use given name name for the newly created user. This attribute is only supported in some backends (e.g.LDAP), and its support may
have further limitations (e.g. LDAP schema rules).
--homephone=phone
Use home telephone number phone for the newly created user. This attribute is only supported in some backends (e.g.LDAP), and its
support may have further limitations (e.g. LDAP schema rules).
--roomnumber=room
Use room number room for the newly created user. This attribute is only supported in some backends (e.g.LDAP), and its support may
have further limitations (e.g. LDAP schema rules).
--surname=name
Use surname name for the newly created user. This attribute is only supported in some backends (e.g.LDAP), and its support may have
further limitations (e.g. LDAP schema rules).
--telephonenumber=phone
Use telephone number phone for the newly created user. This attribute is only supported in some backends (e.g.LDAP), and its sup-
port may have further limitations (e.g. LDAP schema rules).
EXIT STATUS
The exit status is 0 on success, nonzero on error.
libuser 2009-12-09 luseradd(1)