181 lines
5.6 KiB
XML
181 lines
5.6 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!--
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SPDX-FileCopyrightText: 1990 , Julianne Frances Haugh
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SPDX-FileCopyrightText: 2007 - 2011, Nicolas François
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SPDX-License-Identifier: BSD-3-Clause
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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 CHSH_AUTH SYSTEM "login.defs.d/CHSH_AUTH.xml">
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<!ENTITY LOGIN_STRING SYSTEM "login.defs.d/LOGIN_STRING.xml">
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<!-- SHADOW-CONFIG-HERE -->
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]>
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<refentry id='chsh.1'>
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<!-- $Id$ -->
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<refentryinfo>
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<author>
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<firstname>Julianne Frances</firstname>
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<surname>Haugh</surname>
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<contrib>Creation, 1990</contrib>
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</author>
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<author>
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<firstname>Thomas</firstname>
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<surname>Kłoczko</surname>
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<email>kloczek@pld.org.pl</email>
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<contrib>shadow-utils maintainer, 2000 - 2007</contrib>
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</author>
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<author>
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<firstname>Nicolas</firstname>
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<surname>François</surname>
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<email>nicolas.francois@centraliens.net</email>
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<contrib>shadow-utils maintainer, 2007 - now</contrib>
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</author>
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</refentryinfo>
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<refmeta>
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<refentrytitle>chsh</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="sectdesc">User Commands</refmiscinfo>
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<refmiscinfo class="source">shadow-utils</refmiscinfo>
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<refmiscinfo class="version">&SHADOW_UTILS_VERSION;</refmiscinfo>
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</refmeta>
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<refnamediv id='name'>
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<refname>chsh</refname>
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<refpurpose>change login shell</refpurpose>
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</refnamediv>
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<refsynopsisdiv id='synopsis'>
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<cmdsynopsis>
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<command>chsh</command>
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<arg choice='opt'>
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<replaceable>options</replaceable>
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</arg>
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<arg choice='opt'>
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<replaceable>LOGIN</replaceable>
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</arg>
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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>chsh</command> command changes the user login shell.
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This determines the name of the user's initial login command. A normal
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user may only change the login shell for her own account; the
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superuser may change the login shell for any account.
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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>chsh</command> command are:
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</para>
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<variablelist remap='IP'>
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<varlistentry>
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<term><option>-h</option>, <option>--help</option></term>
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<listitem>
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<para>Display help message and exit.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-R</option>, <option>--root</option> <replaceable>CHROOT_DIR</replaceable>
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</term>
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<listitem>
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<para>
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Apply changes in the <replaceable>CHROOT_DIR</replaceable>
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directory and use the configuration files from the
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<replaceable>CHROOT_DIR</replaceable> directory.
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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>
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<option>-s</option>, <option>--shell</option> <replaceable>SHELL</replaceable>
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</term>
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<listitem>
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<para>
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The name of the user's new login shell. Setting this field to
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blank causes the system to select the default login shell.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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If the <option>-s</option> option is not selected,
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<command>chsh</command> operates in an interactive fashion, prompting
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the user with the current login shell. Enter the new value to change
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the shell, or leave the line blank to use the current one. The current
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shell is displayed between a pair of <emphasis>[ ]</emphasis> marks.
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</para>
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</refsect1>
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<refsect1 id='note'>
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<title>NOTE</title>
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<para>
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The only restriction placed on the login shell is that the command
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name must be listed in <filename>/etc/shells</filename>, unless the
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invoker is the superuser, and then any value may be added. An
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account with a restricted login shell may not change her login shell.
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For this reason, placing <filename>/bin/rsh</filename> in
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<filename>/etc/shells</filename> is discouraged since accidentally
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changing to a restricted shell would prevent the user from ever
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changing her login shell back to its original value.
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</para>
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</refsect1>
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<refsect1 id='configuration' condition="no_pam">
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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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&CHSH_AUTH;
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&LOGIN_STRING;
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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/passwd</filename></term>
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<listitem>
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<para>User account information.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/etc/shells</filename></term>
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<listitem>
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<para>List of valid login shells.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/etc/login.defs</filename></term>
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<listitem>
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<para>Shadow password suite configuration.</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>login.defs</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>passwd</refentrytitle><manvolnum>5</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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