shadow/man/groupmems.8.xml

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<?xml version="1.0" encoding="UTF-8"?>
<refentry id='groupmems.8'>
<!-- $Id$ -->
<refmeta>
<refentrytitle>groupmems</refentrytitle>
<manvolnum>8</manvolnum>
<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
</refmeta>
<refnamediv id='name'>
<refname>groupmems</refname>
<refpurpose>administer members of a user's primary group</refpurpose>
</refnamediv>
<refsynopsisdiv id='synopsis'>
<cmdsynopsis>
<command>groupmems</command>
<group choice='plain'>
<arg choice='plain'>-a <replaceable>user_name</replaceable></arg>
<arg choice='plain'>-d <replaceable>user_name</replaceable></arg>
<arg choice='plain'>-l </arg><arg choice='plain'>-p </arg>
<arg choice='opt'>-g <replaceable>group_name</replaceable></arg>
</group>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1 id='description'>
<title>DESCRIPTION</title>
<para>
The <command>groupmems</command> command allows a user to administer
his/her own group membership list without the requirement of
superuser privileges. The <command>groupmems</command> utility is for
systems that configure its users to be in their own name sake primary
group (i.e., guest / guest).
</para>
<para>Only the superuser, as administrator, can use
<command>groupmems</command> to alter the memberships of other groups.
</para>
</refsect1>
<refsect1 id='options'>
<title>OPTIONS</title>
<para>
The options which apply to the <command>groupmems</command> command
are:
</para>
<variablelist remap='IP'>
<varlistentry>
<term><option>-a</option> <replaceable>user_name</replaceable></term>
<listitem>
<para>Add a new user to the group membership list.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-d</option> <replaceable>user_name</replaceable></term>
<listitem>
<para>Delete a user from the group membership list.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-p</option></term>
<listitem>
<para>Purge all users from the group membership list.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-g</option> <replaceable>group_name</replaceable></term>
<listitem>
<para>The superuser can specify which group membership
list to modify.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-l</option></term>
<listitem>
<para>List the group membership list.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id='setup'>
<title>SETUP</title>
<para>
The <command>groupmems</command> executable should be in mode
<literal>2770</literal> as user <emphasis>root</emphasis> and in group
<emphasis>groups</emphasis>. The system administrator can add users to
group <emphasis>groups</emphasis> to allow or disallow them using the
<command>groupmems</command> utility to manage their own group
membership list.
</para>
<programlisting>
$ groupadd -r groups
$ chmod 2770 groupmems
$ chown root.groups groupmems
$ groupmems -g groups -a gk4
</programlisting>
</refsect1>
<refsect1 id='files'>
<title>FILES</title>
<variablelist>
<varlistentry>
<term><filename>/etc/group</filename></term>
<listitem>
<para>Group account information.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>/etc/gshadow</filename></term>
<listitem>
<para>secure group account information</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 id='see_also'>
<title>SEE ALSO</title>
<para>
<citerefentry>
<refentrytitle>chfn</refentrytitle><manvolnum>1</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>chsh</refentrytitle><manvolnum>1</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>groupadd</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>groupdel</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>useradd</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>userdel</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>,
<citerefentry>
<refentrytitle>usermod</refentrytitle><manvolnum>8</manvolnum>
</citerefentry>.
</para>
</refsect1>
</refentry>