'\" t
.\"     Title: groupmod
.\"    Author: Julianne Frances Haugh
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 26.05.2025
.\"    Manual: Befehle zur Systemverwaltung
.\"    Source: shadow-utils 4.9
.\"  Language: German
.\"
.TH "GROUPMOD" "8" "26.05.2025" "shadow\-utils 4\&.9" "Befehle zur Systemverwaltung"
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.nh
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.SH "NAME"
groupmod \- \(:andert die Eigenschaften einer Gruppe auf dem System
.SH "\(:UBERSICHT"
.HP \w'\fBgroupmod\fR\ 'u
\fBgroupmod\fR [\fIOptionen\fR] \fIGRUPPE\fR
.SH "BESCHREIBUNG"
.PP
The
\fBgroupmod\fR
command modifies the definition of the specified
\fIGROUP\fR
by modifying the appropriate entry in the group database\&.
.SH "OPTIONEN"
.PP
The options which apply to the
\fBgroupmod\fR
command are:
.PP
\fB\-a\fR, \fB\-\-append\fR\ \&\fIGID\fR
.RS 4
If group members are specified with \-U, append them to the existing member list, rather than replacing it\&.
.RE
.PP
\fB\-g\fR, \fB\-\-gid\fR\ \&\fIGID\fR
.RS 4
The group ID of the given
\fIGROUP\fR
will be changed to
\fIGID\fR\&.
.sp
The value of
\fIGID\fR
must be a non\-negative decimal integer\&. This value must be unique, unless the
\fB\-o\fR
option is used\&.
.sp
Benutzer, welche die Gruppe als Hauptgruppe verwenden, werden aktualisiert, um die Gruppe als Hauptgruppe zu behalten\&.
.sp
Any files that have the old group ID and must continue to belong to
\fIGROUP\fR, must have their group ID changed manually\&.
.sp
No checks will be performed with regard to the
\fBGID_MIN\fR,
\fBGID_MAX\fR,
\fBSYS_GID_MIN\fR, or
\fBSYS_GID_MAX\fR
from
/etc/login\&.defs\&.
.RE
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
zeigt die Hilfe an und beendet das Programm
.RE
.PP
\fB\-n\fR, \fB\-\-new\-name\fR\ \&\fINEW_GROUP\fR
.RS 4
The name of the group will be changed from
\fIGROUP\fR
to
\fINEW_GROUP\fR
name\&.
.RE
.PP
\fB\-o\fR, \fB\-\-non\-unique\fR
.RS 4
When used with the
\fB\-g\fR
option, allow to change the group
\fIGID\fR
to a non\-unique value\&.
.RE
.PP
\fB\-p\fR, \fB\-\-password\fR\ \&\fIPASSWORD\fR
.RS 4
The encrypted password, as returned by
\fBcrypt\fR(3)\&.
.sp
\fBNote:\fR
This option is not recommended because the password (or encrypted password) will be visible by users listing the processes\&.
.sp
Sie sollten sicherstellen, dass das Passwort den Passwortrichtlinien des Systems entspricht\&.
.RE
.PP
\fB\-R\fR, \fB\-\-root\fR\ \&\fICHROOT_DIR\fR
.RS 4
Apply changes in the
\fICHROOT_DIR\fR
directory and use the configuration files from the
\fICHROOT_DIR\fR
directory\&.
.RE
.PP
\fB\-P\fR, \fB\-\-prefix\fR\ \&\fIPREFIX_DIR\fR
.RS 4
Apply changes in the
\fIPREFIX_DIR\fR
directory and use the configuration files from the
\fIPREFIX_DIR\fR
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\&.
.RE
.PP
\fB\-U\fR, \fB\-\-users\fR
.RS 4
A list of usernames to add as members of the group\&.
.sp
The default behavior (if the
\fB\-g\fR,
\fB\-N\fR, and
\fB\-U\fR
options are not specified) is defined by the
\fBUSERGROUPS_ENAB\fR
variable in
/etc/login\&.defs\&.
.RE
.SH "KONFIGURATION"
.PP
The following configuration variables in
/etc/login\&.defs
change the behavior of this tool:
.SH "DATEIEN"
.PP
/etc/group
.RS 4
Informationen zu den Gruppenkonten
.RE
.PP
/etc/gshadow
.RS 4
sichere Informationen zu den Gruppenkonten
.RE
.PP
/etc/login\&.defs
.RS 4
Konfiguration der Shadow\-Passwort\-Werkzeugsammlung
.RE
.PP
/etc/passwd
.RS 4
Informationen zu den Benutzerkonten
.RE
.SH "R\(:UCKGABEWERTE"
.PP
The
\fBgroupmod\fR
command exits with the following values:
.PP
\fI0\fR
.RS 4
E_SUCCESS: success
.RE
.PP
\fI2\fR
.RS 4
E_USAGE: invalid command syntax
.RE
.PP
\fI3\fR
.RS 4
E_BAD_ARG: invalid argument to option
.RE
.PP
\fI4\fR
.RS 4
E_GID_IN_USE: group id already in use
.RE
.PP
\fI6\fR
.RS 4
E_NOTFOUND: specified group doesn\*(Aqt exist
.RE
.PP
\fI9\fR
.RS 4
E_NAME_IN_USE: group name already in use
.RE
.PP
\fI10\fR
.RS 4
E_GRP_UPDATE: can\*(Aqt update group file
.RE
.PP
\fI11\fR
.RS 4
E_CLEANUP_SERVICE: can\*(Aqt setup cleanup service
.RE
.PP
\fI12\fR
.RS 4
E_PAM_USERNAME: can\*(Aqt determine your username for use with pam
.RE
.PP
\fI13\fR
.RS 4
E_PAM_ERROR: pam returned an error, see syslog facility id groupmod for the PAM error message
.RE
.SH "SIEHE AUCH"
.PP
\fBchfn\fR(1),
\fBchsh\fR(1),
\fBpasswd\fR(1),
\fBgpasswd\fR(8),
\fBgroupadd\fR(8),
\fBgroupdel\fR(8),
\fBlogin.defs\fR(5),
\fBuseradd\fR(8),
\fBuserdel\fR(8),
\fBusermod\fR(8)\&.
