309 lines
6.0 KiB
HTML
309 lines
6.0 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of GRPCK</TITLE>
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</HEAD><BODY>
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<H1>GRPCK</H1>
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Section: Commandes de gestion du systèm (8)<BR>Updated: 28/05/2020<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NOM</H2>
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grpck - Vérifier l'intégrité des fichiers d'administration des groupes
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<DL COMPACT>
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<DT id="1">
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<B>grpck</B> [options] [<I>groupe</I> [ <I>shadow</I> ]]
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</DL>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<P>
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<DD>The
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<B>grpck</B>
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command verifies the integrity of the groups information. It checks that all entries in
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/etc/group
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and /etc/gshadow
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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.
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<P>
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Voici les vérifications effectuées :
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<P>
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<DL COMPACT><DT id="2"><DD>
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•
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nombre correct de champs ;
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</DL>
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<P>
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<DL COMPACT><DT id="3"><DD>
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•
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unicité et validité des noms de groupe ;
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</DL>
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<P>
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<DL COMPACT><DT id="4"><DD>
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•
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a valid group identifier
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(/etc/group only)
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</DL>
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<P>
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<DL COMPACT><DT id="5"><DD>
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•
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a valid list of members
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and administrators
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</DL>
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<P>
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<DL COMPACT><DT id="6"><DD>
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•
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a corresponding entry in the
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/etc/gshadow
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file (respectively
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/etc/group
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for the
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gshadow
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checks)
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</DL>
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<P>
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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
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<B>groupmod</B>
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command to correct the error.
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<P>
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The commands which operate on the
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/etc/group
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and /etc/gshadow files
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are not able to alter corrupted or duplicated entries.
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<B>grpck</B>
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should be used in those circumstances to remove the offending entries.
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<P>
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The
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<B>-r</B>
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and
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<B>-s</B>
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options cannot be combined.
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<P>
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The options which apply to the
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<B>grpck</B>
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command are:
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<P>
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<B>-h</B>, <B>--help</B>
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<DL COMPACT><DT id="7"><DD>
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Afficher un message d'aide et quitter.
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</DL>
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<P>
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<B>-r</B>, <B>--read-only</B>
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<DL COMPACT><DT id="8"><DD>
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Execute the
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<B>grpck</B>
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command in read-only mode. This causes all questions regarding changes to be answered
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<I>no</I>
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without user intervention.
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</DL>
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<P>
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<B>-R</B>, <B>--root</B> <I>CHROOT_DIR</I>
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<DL COMPACT><DT id="9"><DD>
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Apply changes in the
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<I>CHROOT_DIR</I>
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directory and use the configuration files from the
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<I>CHROOT_DIR</I>
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directory.
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</DL>
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<P>
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<B>-s</B>, <B>--sort</B>
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<DL COMPACT><DT id="10"><DD>
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Sort entries in
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/etc/group
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and /etc/gshadow
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by GID.
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</DL>
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<P>
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By default,
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<B>grpck</B>
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operates on
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/etc/group
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and /etc/gshadow. The user may select alternate files with the
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<I>group</I>
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and <I>shadow</I> parameters.
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<A NAME="lbAF"> </A>
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<H2>CONFIGURATION</H2>
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<P>
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The following configuration variables in
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/etc/login.defs
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change the behavior of this tool:
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<P>
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<B>MAX_MEMBERS_PER_GROUP</B> (number)
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<DL COMPACT><DT id="11"><DD>
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Maximum members per group entry. When the maximum is reached, a new group entry (line) is started in
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/etc/group
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(with the same name, same password, and same GID).
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<P>
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La valeur par défaut est 0, ce qui signifie qu'il n'y a pas de limites pour le nombre de membres dans un groupe.
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<P>
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Cette fonctionnalité (groupe découpé) permet de limiter la longueur des lignes dans le fichier de groupes. Ceci est utile pour s'assurer que les lignes pour les groupes NIS ne sont pas plus grandes que 1024 caractères.
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<P>
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Si vous avez besoin de configurer cette limite, vous pouvez utiliser 25.
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<P>
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Remarque : les groupes découpés ne sont peut-être pas pris en charge par tous les outils (même dans la suite d'outils Shadow). Vous ne devriez pas utiliser cette variable, sauf si vous en avez vraiment besoin.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>FICHIERS</H2>
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<P>
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/etc/group
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<DL COMPACT><DT id="12"><DD>
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Informations sur les groupes.
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</DL>
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<P>
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/etc/gshadow
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<DL COMPACT><DT id="13"><DD>
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Informations sécurisées sur les groupes.
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</DL>
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<P>
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/etc/passwd
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<DL COMPACT><DT id="14"><DD>
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Informations sur les comptes des utilisateurs.
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</DL>
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<A NAME="lbAH"> </A>
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<H2>VALEURS DE RETOUR</H2>
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<P>
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The
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<B>grpck</B>
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command exits with the following values:
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<P>
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<I>0</I>
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<DL COMPACT><DT id="15"><DD>
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success
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</DL>
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<P>
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<I>1</I>
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<DL COMPACT><DT id="16"><DD>
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invalid command syntax
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</DL>
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<P>
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<I>2</I>
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<DL COMPACT><DT id="17"><DD>
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one or more bad group entries
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</DL>
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<P>
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<I>3</I>
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<DL COMPACT><DT id="18"><DD>
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can't open group files
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</DL>
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<P>
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<I>4</I>
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<DL COMPACT><DT id="19"><DD>
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can't lock group files
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</DL>
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<P>
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<I>5</I>
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<DL COMPACT><DT id="20"><DD>
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can't update group files
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</DL>
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<A NAME="lbAI"> </A>
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<H2>VOIR AUSSI</H2>
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<P>
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<B><A HREF="/cgi-bin/man/man2html?5+group">group</A></B>(5),
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<B><A HREF="/cgi-bin/man/man2html?8+groupmod">groupmod</A></B>(8),
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<B><A HREF="/cgi-bin/man/man2html?5+gshadow">gshadow</A></B>(5),
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<B><A HREF="/cgi-bin/man/man2html?5+passwd">passwd</A></B>(5),
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<B><A HREF="/cgi-bin/man/man2html?8+pwck">pwck</A></B>(8),
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<B><A HREF="/cgi-bin/man/man2html?5+shadow">shadow</A></B>(5).
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="21"><A HREF="#lbAB">NOM</A><DD>
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<DT id="22"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="23"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="24"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="25"><A HREF="#lbAF">CONFIGURATION</A><DD>
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<DT id="26"><A HREF="#lbAG">FICHIERS</A><DD>
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<DT id="27"><A HREF="#lbAH">VALEURS DE RETOUR</A><DD>
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<DT id="28"><A HREF="#lbAI">VOIR AUSSI</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:03 GMT, March 31, 2021
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</BODY>
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</HTML>
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