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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 12:50:00 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 12:50:00 +0000
commit333f7ecfa3e040191c66b2b92f6c117ca2cbac1d (patch)
tree178a8f140927896970f47930dae9213161268f10 /man/newgrp.1.xml
parentInitial commit. (diff)
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Adding upstream version 1:4.8.1.upstream/1%4.8.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ Copyright (c) 1991 , Julianne Frances Haugh
+ Copyright (c) 2007 - 2008, Nicolas François
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. The name of the copyright holders or contributors may not be used to
+ endorse or promote products derived from this software without
+ specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+<!ENTITY SYSLOG_SG_ENAB SYSTEM "login.defs.d/SYSLOG_SG_ENAB.xml">
+<!-- SHADOW-CONFIG-HERE -->
+]>
+<refentry id='newgrp.1'>
+ <!-- $Id$ -->
+ <refentryinfo>
+ <author>
+ <firstname>Julianne Frances</firstname>
+ <surname>Haugh</surname>
+ <contrib>Creation, 1991</contrib>
+ </author>
+ <author>
+ <firstname>Thomas</firstname>
+ <surname>Kłoczko</surname>
+ <email>kloczek@pld.org.pl</email>
+ <contrib>shadow-utils maintainer, 2000 - 2007</contrib>
+ </author>
+ <author>
+ <firstname>Nicolas</firstname>
+ <surname>François</surname>
+ <email>nicolas.francois@centraliens.net</email>
+ <contrib>shadow-utils maintainer, 2007 - now</contrib>
+ </author>
+ </refentryinfo>
+ <refmeta>
+ <refentrytitle>newgrp</refentrytitle>
+ <manvolnum>1</manvolnum>
+ <refmiscinfo class="sectdesc">User Commands</refmiscinfo>
+ <refmiscinfo class="source">shadow-utils</refmiscinfo>
+ <refmiscinfo class="version">&SHADOW_UTILS_VERSION;</refmiscinfo>
+ </refmeta>
+ <refnamediv id='name'>
+ <refname>newgrp</refname>
+ <refpurpose>log in to a new group</refpurpose>
+ </refnamediv>
+ <!-- body begins here -->
+ <refsynopsisdiv id='synopsis'>
+ <cmdsynopsis>
+ <command>newgrp</command> <arg choice='opt'>- </arg>
+ <arg choice='opt'><replaceable>group</replaceable></arg>
+ </cmdsynopsis>
+ </refsynopsisdiv>
+
+ <refsect1 id='description'>
+ <title>DESCRIPTION</title>
+ <para>
+ The <command>newgrp</command> command is used to change the current
+ group ID during a login session. If the optional <option>-</option>
+ flag is given, the user's environment will be reinitialized as though
+ the user had logged in, otherwise the current environment, including
+ current working directory, remains unchanged.
+ </para>
+
+ <para>
+ <command>newgrp</command> changes the current real group ID to the
+ named group, or to the default group listed in
+ <filename>/etc/passwd</filename> if no group name is given.
+ <command>newgrp</command> also tries to add the group to the user
+ groupset. If not root, the user will be prompted for a password if she
+ does not have a password (in <filename>/etc/shadow</filename> if this
+ user has an entry in the shadowed password file, or in
+ <filename>/etc/passwd</filename> otherwise) and the group does, or if
+ the user is not listed as a member and the group has a password. The
+ user will be denied access if the group password is empty and the user
+ is not listed as a member.
+ </para>
+
+ <para condition="gshadow">
+ If there is an entry for this group in
+ <filename>/etc/gshadow</filename>, then the list of members and the
+ password of this group will be taken from this file, otherwise, the
+ entry in <filename>/etc/group</filename> is considered.
+ </para>
+ </refsect1>
+
+ <refsect1 id='configuration'>
+ <title>CONFIGURATION</title>
+ <para>
+ The following configuration variables in
+ <filename>/etc/login.defs</filename> change the behavior of this
+ tool:
+ </para>
+ <variablelist>
+ &SYSLOG_SG_ENAB;
+ </variablelist>
+ </refsect1>
+
+ <refsect1 id='files'>
+ <title>FILES</title>
+ <variablelist>
+ <varlistentry>
+ <term><filename>/etc/passwd</filename></term>
+ <listitem>
+ <para>User account information.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><filename>/etc/shadow</filename></term>
+ <listitem>
+ <para>Secure user account information.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry>
+ <term><filename>/etc/group</filename></term>
+ <listitem>
+ <para>Group account information.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry condition="gshadow">
+ <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>id</refentrytitle><manvolnum>1</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>login</refentrytitle><manvolnum>1</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>su</refentrytitle><manvolnum>1</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>sg</refentrytitle><manvolnum>1</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>gpasswd</refentrytitle><manvolnum>1</manvolnum>
+ </citerefentry>,
+ <citerefentry>
+ <refentrytitle>group</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry><phrase condition="gshadow">,
+ <citerefentry condition="gshadow">
+ <refentrytitle>gshadow</refentrytitle><manvolnum>5</manvolnum>
+ </citerefentry>
+ </phrase>.
+ </para>
+ </refsect1>
+</refentry>