usermod(1M)                                                                                                                            usermod(1M)

NAME

       usermod - modify a user's login information on the system

SYNOPSIS

       usermod  [ -u uid [-o]] [-g group] [ -G group [ , group...]] [ -d dir [-m]] [-s shell] [-c comment] [-l new_name] [-f inactive] [-e expire]
       [-A authorization  [, authorization]] [-P profile  [, profile]] [-R role  [, role]] [-K key=value] login

       The usermod utility modifies a user's login definition on the system. It changes the definition of the specified login and makes the appro-
       priate login-related system file and file system changes.

       The system file entries created with this command have a limit of 512 characters per line. Specifying long arguments to several options may
       exceed this limit.

       The following options are supported:

       -A authorization        One or more comma separated authorizations as defined in auth_attr(4).  Only a user or role who has grant rights to
                               the  authorization  can assign it to an account. This replaces any existing authorization setting. If no authoriza-
                               tion list is specified, the existing setting is removed.

       -c comment              Specify a comment string. comment can be 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                  Specify the new home directory of the user. It defaults to base_dir/login, where base_dir is the base directory for
                               new login home directories, and login is the new login.

       -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).

                               For example, you may enter 10/6/90 or October 6, 1990. A value of `` '' defeats the status of the expired date.

       -f inactive             Specify the maximum number of days allowed between uses of a login ID before that login  ID  is  declared  invalid.
                               Normal values are positive integers. A value of 0 defeats the status.

       -g group                Specify an existing group's integer ID or character-string name. It redefines the user's primary group membership.

       -G group                Specify  an existing group's integer "ID" "," or character string name. It redefines the user's supplementary group
                               membership. Duplicates between group with the -g and -G options are ignored. No more than NGROUPS_UMAX  groups  may
                               be specified as defined in <param.h>.

       -K key=value            Replace  existing  or  add to a user's key=value pair attributes. Multiple -K options may be used to replace or 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.  Specifying  a  key=  without  a  value  removes  an  existing
                               key=value  pair.  The  "type"  key  may only be specified without a value or with the "role" value for this option.
                               Specifying the "type" key without a value leaves the account as a normal user, with the "role" value changing  from
                               a normal user to a role user. As a role account, no roles (-R or roles=value) may be present.

       -l new_logname          Specify  the  new login name for the user. The new_logname argument is a string no more than eight bytes consisting
                               of characters from the set of alphabetic characters, numeric characters, period (.), underline (_), 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  fields that do not meet these requirements. The new_logname argument must contain at least one character and
                               must not contain a colon (:) or NEWLINE (
).

       -m                      Move the user's home directory to the new directory specified with the -d option. If the directory already  exists,
                               it must have permissions read/write/execute by group, where group is the user's primary group.

       -o                      This option allows the specified UID to be duplicated (non-unique).

       -P profile              One  or  more comma-separated rights profiles defined in prof_attr(4).  This replaces any existing profile setting.
                               If no profile list is specified, the existing setting is removed.

       -R role                 One or more comma-separated roles (see roleadd(1M)). This replaces any existing role setting.  If no role  list  is
                               specified, the existing setting is removed.

       -s shell                Specify  the  full  pathname of the program that is used as the user's shell on login. The value of shell must be a
                               valid executable file.

       -u uid                  Specify a new UID for the user. It must be a non-negative decimal integer less than MAXUID as defined in <param.h>.
                               The  UID associated with the user's home directory is not modified with this option; a user will not have access to
                               their home directory until the UID is manually reassigned using chown(1).

       The following operands are supported:

       login    An existing login name to be modified.

       In case of an error, usermod prints an error message and exits with one of the following values:

       2        The command syntax was invalid. A usage message for the usermod command is displayed.

       3        An invalid argument was provided to an option.

       4        The uid given with the -u option is already in use.

       5        The password files contain an error. pwconv(1M) can be used to correct possible errors. See passwd(4).

       6        The login to be modified does not exist, the group does not exist, or the login shell does not exist.

       8        The login to be modified is in use.

       9        The new_logname is already in use.

       10       Cannot update the /etc/group or /etc/user_attr file. Other update requests will be implemented.

       11       Insufficient space to move the home directory (-m option). Other update requests will be implemented.

       12       Unable to complete the move of the home directory to the new home directory.

       /etc/group              system file containing group definitions

       /etc/datemsk            system file of date formats

       /etc/passwd             system password file

       /etc/shadow             system file containing users' encrypted passwords and related information

       /etc/user_attr          system file containing additional user and role attributes

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Evolving                     |
       +-----------------------------+-----------------------------+

       chown(1), passwd(1), users(1B), groupadd(1M), groupdel(1M), groupmod(1M), logins(1M), pwconv(1M),  roleadd(1M),  roledel(1M),  rolemod(1M),
       useradd(1M), userdel(1M), getdate(3C), auth_attr(4), passwd(4), attributes(5)

       The  usermod  utility modifies passwd definitions only in the local /etc/passwd and /etc/shadow files. If a network nameservice such as NIS
       or NIS+ is being used to supplement the local files with additional entries, usermod cannot change  information  supplied  by  the  network
       nameservice. However usermod will verify the uniqueness of user name and user ID against the external nameservice.

       The usermod utility uses the /etc/datemsk file, available with SUNWaccr, for date formatting.

                                                                    1 Jul 2004                                                         usermod(1M)