309 lines
5.8 KiB
HTML
309 lines
5.8 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: Comandi per la gestione del si (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>NOME</H2>
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grpck - verifica l'integrità dei file dei gruppi
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<A NAME="lbAC"> </A>
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<H2>SINOSSI</H2>
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<DL COMPACT>
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<DT id="1">
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<B>grpck</B> [opzioni] [<I>gruppo</I> [ <I>shadow</I> ]]
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</DL>
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<A NAME="lbAD"> </A>
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<H2>DESCRIZIONE</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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Vengono fatti controlli per verificare che ogni voce abbia:
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<P>
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<DL COMPACT><DT id="2"><DD>
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•
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il corretto numero di campi
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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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un nome univoco e valido di gruppo
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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>OPZIONI</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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Mostra un messaggio di aiuto ed esce.
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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>CONFIGURAZIONE</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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Il valore predefinito è 0, che non pone nessun limite al numero di membri per gruppo.
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<P>
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Questa opzione (dividi gruppo) permette di limitare la lunghezza delle righe nel file «group». Questo è utile per essere certi che le righe per gruppi NIS non eccedano i 1024 caratteri.
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<P>
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Se si deve impostare questo limite, si può usare 25.
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<P>
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Nota: la divisione dei gruppi potrebbe non essere supportata da ogni strumento (anche all'interno del pacchetto Shadow). Non si dovrebbe utilizzare questa variabile a meno di esserci forzati.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>FILE</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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Informazioni sugli account di gruppo.
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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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Informazioni sicure sugli account di gruppo.
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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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Informazioni sugli account utente.
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</DL>
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<A NAME="lbAH"> </A>
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<H2>VALORI RESTITUITI</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>VEDERE ANCHE</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">NOME</A><DD>
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<DT id="22"><A HREF="#lbAC">SINOSSI</A><DD>
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<DT id="23"><A HREF="#lbAD">DESCRIZIONE</A><DD>
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<DT id="24"><A HREF="#lbAE">OPZIONI</A><DD>
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<DT id="25"><A HREF="#lbAF">CONFIGURAZIONE</A><DD>
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<DT id="26"><A HREF="#lbAG">FILE</A><DD>
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<DT id="27"><A HREF="#lbAH">VALORI RESTITUITI</A><DD>
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<DT id="28"><A HREF="#lbAI">VEDERE ANCHE</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: 00:05:04 GMT, March 31, 2021
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</BODY>
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</HTML>
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