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'\" t
.\"     Title: gpasswd
.\"    Author: rafal Maszkowski
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 21/06/2024
.\"    Manual: User Commands
.\"    Source: shadow-utils 4.15.2
.\"  Language: French
.\"
.TH "GPASSWD" "1" "21/06/2024" "shadow\-utils 4\&.15\&.2" "User Commands"
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.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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.nh
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.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
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.SH "NOM"
gpasswd \- administer /etc/group and /etc/gshadow
.SH "SYNOPSIS"
.HP \w'\fBgpasswd\fR\ 'u
\fBgpasswd\fR [\fIoption\fR] \fIgroup\fR
.SH "DESCRIPTION"
.PP
The
\fBgpasswd\fR
command is used to administer
/etc/group, and /etc/gshadow\&. Every group can have
administrators,
members and a password\&.
.PP
System administrators can use the
\fB\-A\fR
option to define group administrator(s) and the
\fB\-M\fR
option to define members\&. They have all rights of group administrators and members\&.
.PP
\fBgpasswd\fR
called by
a group administrator
with a group name only prompts for the new password of the
\fIgroup\fR\&.
.PP
If a password is set the members can still use
\fBnewgrp\fR(1)
without a password, and non\-members must supply the password\&.
.SS "Notes sur les mots de passe de groupe"
.PP
Les mots de passe de groupe repr\('esentent naturellement un risque en mati\(`ere de s\('ecurit\('e, puisque plusieurs personnes ont connaissance du mot de passe\&. Cependant, les groupes sont utiles pour permettre la coop\('eration entre diff\('erents utilisateurs\&.
.SH "OPTIONS"
.PP
Except for the
\fB\-A\fR
and
\fB\-M\fR
options, the options cannot be combined\&.
.PP
The options which apply to the
\fBgpasswd\fR
command are:
.PP
\fB\-a\fR, \fB\-\-add\fR\ \&\fIuser\fR
.RS 4
Add the
\fIuser\fR
to the named
\fIgroup\fR\&.
.RE
.PP
\fB\-d\fR, \fB\-\-delete\fR\ \&\fIuser\fR
.RS 4
Remove the
\fIuser\fR
from the named
\fIgroup\fR\&.
.RE
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
Afficher un message d\*(Aqaide et quitter\&.
.RE
.PP
\fB\-Q\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\&. Only absolute paths are supported\&.
.RE
.PP
\fB\-r\fR, \fB\-\-remove\-password\fR
.RS 4
Remove the password from the named
\fIgroup\fR\&. The group password will be empty\&. Only group members will be allowed to use
\fBnewgrp\fR
to join the named
\fIgroup\fR\&.
.RE
.PP
\fB\-R\fR, \fB\-\-restrict\fR
.RS 4
Restrict the access to the named
\fIgroup\fR\&. The group password is set to "!"\&. Only group members with a password will be allowed to use
\fBnewgrp\fR
to join the named
\fIgroup\fR\&.
.RE
.PP
\fB\-A\fR, \fB\-\-administrators\fR\ \&\fIuser\fR,\&.\&.\&.
.RS 4
Configurer la liste des administrateurs\&.
.RE
.PP
\fB\-M\fR, \fB\-\-members\fR\ \&\fIuser\fR,\&.\&.\&.
.RS 4
Configurer la liste des membres du groupe\&.
.RE
.SH "AVERTISSEMENTS"
.PP
This tool only operates on the
/etc/group
and /etc/gshadow files\&.
Thus you cannot change any NIS or LDAP group\&. This must be performed on the corresponding server\&.
.SH "CONFIGURATION"
.PP
The following configuration variables in
/etc/login\&.defs
change the behavior of this tool:
.SH "FICHIERS"
.PP
/etc/group
.RS 4
Informations sur les groupes\&.
.RE
.PP
/etc/gshadow
.RS 4
Informations s\('ecuris\('ees sur les groupes\&.
.RE
.SH "VOIR AUSSI"
.PP
\fBnewgrp\fR(1),
\fBgroupadd\fR(8),
\fBgroupdel\fR(8),
\fBgroupmod\fR(8),
\fBgrpck\fR(8),
\fBgroup\fR(5), \fBgshadow\fR(5)\&.