source: postlfs/config/etcshells.xml@ f8d632a

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Last change on this file since f8d632a was f8d632a, checked in by Bruce Dubbs <bdubbs@…>, 17 years ago

New XML Chapter 3

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2287 af4574ff-66df-0310-9fd7-8a98e5e911e0

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE part PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3 "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="postlfs-config-shells">
9<?dbhtml filename="etcshells.html"?>
10<title>/etc/shells</title>
11
12<para>The <filename>shells</filename> file contains a list of
13login shells on the system. Applications use this file to determine
14whether a shell is valid. For each shell a single line should be
15present, consisting of the shell's path, relative to root.</para>
16
17<para>For example, this file is consulted by <command>chsh</command> to
18determine whether a normal user may change the login shell for her
19own account. If the command name is not listed, the user will be denied of
20change.</para>
21
22<para>It is a requirement for applications such as
23<acronym>GDM</acronym> which does not populate the face browser if it
24can't find <filename>/etc/shells</filename> or <acronym>FTP</acronym>
25daemons which traditionally disallow access to users with shells not
26included in this file.</para>
27
28<screen><userinput><command>cat &gt; /etc/shells &lt;&lt; "EOF"</command>
29# Begin /etc/shells
30
31/bin/sh
32/bin/bash
33
34# End /etc/shells
35<command>EOF</command></userinput></screen>
36
37</sect1>
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