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'\" t
.\"     Title: grpck
.\"    Author: Julianne Frances Haugh
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 21.06.2024
.\"    Manual: System Management Commands
.\"    Source: shadow-utils 4.15.2
.\"  Language: German
.\"
.TH "GRPCK" "8" "21.06.2024" "shadow\-utils 4\&.15\&.2" "System Management Commands"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
grpck \- \(:uberpr\(:uft die Stimmigkeit der Gruppendateien
.SH "\(:UBERSICHT"
.HP \w'\fBgrpck\fR\ 'u
\fBgrpck\fR [options] [\fIgroup\fR\ [\ \fIshadow\fR\ ]]
.SH "BESCHREIBUNG"
.PP
The
\fBgrpck\fR
command verifies the integrity of the groups information\&. It checks that all entries in
/etc/group
and /etc/gshadow
have the proper format and contain valid data\&. The user is prompted to delete entries that are improperly formatted or which have other uncorrectable errors\&.
.PP
Es wird \(:uberpr\(:uft, ob jeder Eintrag folgende Eigenschaften aufweist:
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
die richtige Anzahl von Feldern
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
einen eindeutigen und g\(:ultigen Gruppennamen
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
a valid group identifier
(/etc/group only)
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
a valid list of members
and administrators
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
a corresponding entry in the
/etc/gshadow
file (respectively
/etc/group
for the
gshadow
checks)
.RE
.PP
The checks for correct number of fields and unique group name are fatal\&. If an entry has the wrong number of fields, the user will be prompted to delete the entire line\&. If the user does not answer affirmatively, all further checks are bypassed\&. An entry with a duplicated group name is prompted for deletion, but the remaining checks will still be made\&. All other errors are warnings and the user is encouraged to run the
\fBgroupmod\fR
command to correct the error\&.
.PP
The commands which operate on the
/etc/group
and /etc/gshadow files
are not able to alter corrupted or duplicated entries\&.
\fBgrpck\fR
should be used in those circumstances to remove the offending entries\&.
.SH "OPTIONEN"
.PP
The
\fB\-r\fR
and
\fB\-s\fR
options cannot be combined\&.
.PP
The options which apply to the
\fBgrpck\fR
command are:
.PP
\fB\-h\fR, \fB\-\-help\fR
.RS 4
zeigt die Hilfe an und beendet das Programm\&.
.RE
.PP
\fB\-r\fR, \fB\-\-read\-only\fR
.RS 4
Execute the
\fBgrpck\fR
command in read\-only mode\&. This causes all questions regarding changes to be answered
\fIno\fR
without user intervention\&.
.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\&. Only absolute paths are supported\&.
.RE
.PP
\fB\-s\fR, \fB\-\-sort\fR
.RS 4
Sort entries in
/etc/group
and /etc/gshadow
by GID\&.
.RE
.PP
\fB\-S\fR, \fB\-\-silence\-warnings\fR
.RS 4
Suppress more controversial warnings, in particular warnings about inconsistency between group members listed in
/etc/group
and
/etc/ghadow\&.
.RE
.PP
By default,
\fBgrpck\fR
operates on
/etc/group
and /etc/gshadow\&. The user may select alternate files with the
\fIgroup\fR
and \fIshadow\fR parameters\&.
.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
gesch\(:utzte Informationen zu den Gruppenkonten
.RE
.PP
/etc/passwd
.RS 4
Informationen zu den Benutzerkonten
.RE
.SH "R\(:UCKGABEWERTE"
.PP
The
\fBgrpck\fR
command exits with the following values:
.PP
\fI0\fR
.RS 4
success
.RE
.PP
\fI1\fR
.RS 4
invalid command syntax
.RE
.PP
\fI2\fR
.RS 4
one or more bad group entries
.RE
.PP
\fI3\fR
.RS 4
can\*(Aqt open group files
.RE
.PP
\fI4\fR
.RS 4
can\*(Aqt lock group files
.RE
.PP
\fI5\fR
.RS 4
can\*(Aqt update group files
.RE
.SH "SIEHE AUCH"
.PP
\fBgroup\fR(5),
\fBgroupmod\fR(8),
\fBgshadow\fR(5),
\fBpasswd\fR(5),
\fBpwck\fR(8),
\fBshadow\fR(5)\&.