215 lines
7.5 KiB
XML
215 lines
7.5 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright (c) 2005 , Tomasz Kłoczko
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Copyright (c) 2007 - 2008, Nicolas François
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. The name of the copyright holders or contributors may not be used to
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endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY MAX_MEMBERS_PER_GROUP SYSTEM "login.defs.d/MAX_MEMBERS_PER_GROUP.xml">
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]>
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<refentry id='groupmems.8'>
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<!-- $Id$ -->
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<refmeta>
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<refentrytitle>groupmems</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
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</refmeta>
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<refnamediv id='name'>
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<refname>groupmems</refname>
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<refpurpose>administer members of a user's primary group</refpurpose>
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</refnamediv>
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<refsynopsisdiv id='synopsis'>
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<cmdsynopsis>
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<command>groupmems</command>
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<group choice='plain'>
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<arg choice='plain'>-a <replaceable>user_name</replaceable></arg>
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<arg choice='plain'>-d <replaceable>user_name</replaceable></arg>
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<arg choice='opt'>-g <replaceable>group_name</replaceable></arg>
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<arg choice='plain'>-l </arg><arg choice='plain'>-p </arg>
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</group>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1 id='description'>
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<title>DESCRIPTION</title>
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<para>
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The <command>groupmems</command> command allows a user to administer
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his/her own group membership list without the requirement of
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superuser privileges. The <command>groupmems</command> utility is for
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systems that configure its users to be in their own name sake primary
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group (i.e., guest / guest).
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</para>
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<para>Only the superuser, as administrator, can use
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<command>groupmems</command> to alter the memberships of other groups.
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</para>
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</refsect1>
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<refsect1 id='options'>
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<title>OPTIONS</title>
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<para>
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The options which apply to the <command>groupmems</command> command
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are:
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</para>
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<variablelist remap='IP'>
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<varlistentry>
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<term><option>-a</option>, <option>--add</option> <replaceable>user_name</replaceable></term>
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<listitem>
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<para>Add an user to the group membership list.</para>
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<para condition="gshadow">
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If the <filename>/etc/gshadow</filename> file exist, and the
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group has no entry in the <filename>/etc/gshadow</filename>
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file, a new entry will be created.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-d</option>, <option>--delete</option> <replaceable>user_name</replaceable></term>
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<listitem>
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<para>Delete a user from the group membership list.</para>
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<para condition="gshadow">
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If the <filename>/etc/gshadow</filename> file exist, the user
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will be removed from the list of members and administrators of
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the group.
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</para>
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<para condition="gshadow">
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If the <filename>/etc/gshadow</filename> file exist, and the
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group has no entry in the <filename>/etc/gshadow</filename>
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file, a new entry will be created.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-g</option>, <option>--group</option> <replaceable>group_name</replaceable></term>
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<listitem>
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<para>The superuser can specify which group membership
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list to modify.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-l</option>, <option>--list</option></term>
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<listitem>
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<para>List the group membership list.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><option>-p</option>, <option>--purge</option></term>
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<listitem>
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<para>Purge all users from the group membership list.</para>
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<para condition="gshadow">
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If the <filename>/etc/gshadow</filename> file exist, and the
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group has no entry in the <filename>/etc/gshadow</filename>
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file, a new entry will be created.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id='setup'>
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<title>SETUP</title>
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<para>
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The <command>groupmems</command> executable should be in mode
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<literal>2770</literal> as user <emphasis>root</emphasis> and in group
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<emphasis>groups</emphasis>. The system administrator can add users to
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group <emphasis>groups</emphasis> to allow or disallow them using the
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<command>groupmems</command> utility to manage their own group
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membership list.
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</para>
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<programlisting>
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$ groupadd -r groups
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$ chmod 2770 groupmems
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$ chown root.groups groupmems
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$ groupmems -g groups -a gk4
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</programlisting>
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</refsect1>
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<refsect1 id='configuration'>
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<title>CONFIGURATION</title>
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<para>
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The following configuration variables in
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<filename>/etc/login.defs</filename> change the behavior of this
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tool:
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</para>
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<variablelist>
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&MAX_MEMBERS_PER_GROUP;
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</variablelist>
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</refsect1>
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<refsect1 id='files'>
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<title>FILES</title>
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<variablelist>
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<varlistentry>
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<term><filename>/etc/group</filename></term>
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<listitem>
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<para>Group account information.</para>
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</listitem>
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</varlistentry>
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<varlistentry condition="gshadow">
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<term><filename>/etc/gshadow</filename></term>
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<listitem>
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<para>secure group account information</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id='see_also'>
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<title>SEE ALSO</title>
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<para>
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<citerefentry>
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<refentrytitle>chfn</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>chsh</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>groupadd</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>groupdel</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>useradd</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>userdel</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>usermod</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>.
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</para>
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</refsect1>
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</refentry>
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