Allow names that do not conform to standards.

The default base directory for the system if -d HOME_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.

If this option is not specified, useradd will use the base directory specified by the HOME variable in /etc/default/useradd, or /home by default.

Eine beliebige Zeichenkette. Dies ist für gewöhnlich eine kurze Beschreibung des Logins und wird im Moment im Feld für den vollständigen Namen des Benutzers gespeichert.

The new user will be created using HOME_DIR as the value for the user's login directory. The default is to append the LOGIN name to BASE_DIR and use that as the login directory name. If the directory HOME_DIR does not exist, then it will be created unless the -M option is specified.

Lesen Sie dazu unten den Abschnitt »Die Standardwerte verändern«.

The date on which the user account will be disabled. The date is specified in the format YYYY-MM-DD.

If not specified, useradd will use the default expiry date specified by the EXPIRE variable in /etc/default/useradd, or an empty string (no expiry) by default.

Die Anzahl von Tagen nach Ablaufen des Passworts bis das Konto dauerhaft deaktiviert wird. Ein Wert von 0 deaktiviert das Konto, sobald das Passwort abläuft. Ein Wert von -1 schaltet diese Funktion ab.

If not specified, useradd will use the default inactivity period specified by the INACTIVE variable in /etc/default/useradd, or -1 by default.

Der Name oder die Nummer der anfänglichen Anmeldegruppe des Benutzers. Der Gruppenname muss existieren. Die Gruppenzahl muss auf eine bereits vorhandene Gruppe verweisen.

If not specified, the behavior of useradd will depend on the USERGROUPS_ENAB variable in /etc/login.defs. If this variable is set to yes (or -U/--user-group is specified on the command line), a group will be created for the user, with the same name as her loginname. If the variable is set to no (or -N/--no-user-group is specified on the command line), useradd will set the primary group of the new user to the value specified by the GROUP variable in /etc/default/useradd, or 100 by default.

A list of supplementary groups which the user is also a member of. Each group is separated from the next by a comma, with no intervening whitespace. The groups are subject to the same restrictions as the group given with the -g option. The default is for the user to belong only to the initial group.

zeigt die Hilfe an und beendet das Programm

The skeleton directory, which contains files and directories to be copied in the user's home directory, when the home directory is created by useradd.

This option is only valid if the -m (or --create-home) option is specified.

If this option is not set, the skeleton directory is defined by the SKEL variable in /etc/default/useradd or, by default, /etc/skel.

Soweit möglich, werden die ACLs und erweiterten Attribute kopiert.

Overrides /etc/login.defs defaults (UID_MIN, UID_MAX, UMASK, PASS_MAX_DAYS and others).

Example: -K PASS_MAX_DAYS=-1 can be used when creating system account to turn off password aging, even though system account has no password at all. Multiple -K options can be specified, e.g.: -K UID_MIN=100  -K UID_MAX=499

Fügt den Benutzer nicht zu den Datenbanken lastlog und faillog hinzu.

By default, the user's entries in the lastlog and faillog databases are reset to avoid reusing the entry from a previously deleted user.

Create the user's home directory if it does not exist. The files and directories contained in the skeleton directory (which can be defined with the -k option) will be copied to the home directory.

By default, if this option is not specified and CREATE_HOME is not enabled, no home directories are created.

The directory where the user's home directory is created must exist and have proper SELinux context and permissions. Otherwise the user's home directory cannot be created or accessed.

Do no create the user's home directory, even if the system wide setting from /etc/login.defs (CREATE_HOME) is set to yes.

Do not create a group with the same name as the user, but add the user to the group specified by the -g option or by the GROUP variable in /etc/default/useradd.

The default behavior (if the -g, -N, and -U options are not specified) is defined by the USERGROUPS_ENAB variable in /etc/login.defs.

Erlaubt das Erstellen eines Benutzerkontos mit einer schon vergebenen (nicht eindeutigen) UID.

This option is only valid in combination with the -u option.

The encrypted password, as returned by crypt(3). The default is to disable the password.

Note: This option is not recommended because the password (or encrypted password) will be visible by users listing the processes.

Sie sollten sicherstellen, dass das Passwort den Passwortrichtlinien des Systems entspricht.

erstellt ein Systemkonto

System users will be created with no aging information in /etc/shadow, and their numeric identifiers are chosen in the SYS_UID_MIN-SYS_UID_MAX range, defined in /etc/login.defs, instead of UID_MIN-UID_MAX (and their GID counterparts for the creation of groups).

Note that useradd will not create a home directory for such a user, regardless of the default setting in /etc/login.defs (CREATE_HOME). You have to specify the -m options if you want a home directory for a system account to be created.

Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

Apply changes in the PREFIX_DIR directory and use the configuration files from the PREFIX_DIR directory. This option does not chroot and is intended for preparing a cross-compilation target. Some limitations: NIS and LDAP users/groups are not verified. PAM authentication is using the host files. No SELINUX support.

The name of the user's login shell. The default is to leave this field blank, which causes the system to select the default login shell specified by the SHELL variable in /etc/default/useradd, or an empty string by default.

The numerical value of the user's ID. This value must be unique, unless the -o option is used. The value must be non-negative. The default is to use the smallest ID value greater than or equal to UID_MIN and greater than every other user.

See also the -r option and the UID_MAX description.

erstellt eine Gruppe mit dem gleichen Name wie der Benutzer und fügt diesen der Gruppe hinzu

The default behavior (if the -g, -N, and -U options are not specified) is defined by the USERGROUPS_ENAB variable in /etc/login.defs.

Der SELinux-Benutzer für den Benutzer nach seiner Anmeldung. Standardmäßig bleibt dieses Feld leer und es wird dem System überlassen, den SELinux-Benutzer zu bestimmen.

Informationen zu den Benutzerkonten

verschlüsselte Informationen zu den Benutzerkonten

Informationen zu den Gruppenkonten

sichere Informationen zu den Gruppenkonten

Standardwerte für die Erstellung eines Kontos

Run-part files to execute during user addition. The environment variable ACTION will be populated with useradd and SUBJECT with the username. useradd-pre.d will be executed prior to any user addition. useradd-post.d will execute after user addition. If a script exits non-zero then execution will terminate.

Verzeichnis, das die Standarddateien enthält

Per user subordinate group IDs.

Per user subordinate user IDs.

Konfiguration der Shadow-Passwort-Werkzeugsammlung

success

can't update password file

invalid command syntax

invalid argument to option

UID already in use (and no -o)

specified group doesn't exist

username already in use

can't update group file

can't create home directory

can't update SELinux user mapping