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authorBruce Dubbs <bdubbs@linuxfromscratch.org>2020-06-07 20:16:00 +0000
committerBruce Dubbs <bdubbs@linuxfromscratch.org>2020-06-07 20:16:00 +0000
commitfcc027677da55c41dcaea045f5b9ff8b088e6495 (patch)
tree42500a7858959695b971e7f28f1d0bf33185db2e /chapter09/etcshells.xml
parentd53fefab5a6772fef606392a61608fc290e6a7ae (diff)
Initial commit of alternative cross LFS
git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross2@11897 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE part PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+ "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
+ <!ENTITY % general-entities SYSTEM "../general.ent">
+ %general-entities;
+]>
+
+<sect1 id="ch-config-shells" xreflabel="Creating the /etc/shells File">
+ <?dbhtml filename="etcshells.html"?>
+
+<!--
+ <sect1info>
+ <othername>$LastChangedBy$</othername>
+ <date>$Date$</date>
+ </sect1info>
+-->
+ <title>Creating the /etc/shells File</title>
+
+ <indexterm zone="ch-config-shells">
+ <primary sortas="e-etc-shells">/etc/shells</primary>
+ </indexterm>
+
+ <para>The <filename>shells</filename> file contains a list of
+ login shells on the system. Applications use this file to determine
+ whether a shell is valid. For each shell a single line should be
+ present, consisting of the shell's path, relative to the root of the
+ directory structure (/).</para>
+
+ <para>For example, this file is consulted by <command>chsh</command>
+ to determine whether an unprivileged user may change the login shell for her
+ own account. If the command name is not listed, the user will be denied of
+ change.</para>
+
+ <para>It is a requirement for applications such as
+ <application>GDM</application> which does not populate the
+ face browser if it can't find <filename>/etc/shells</filename>, or
+ FTP daemons which traditionally disallow access to users
+ with shells not included in this file.</para>
+
+<screen role="root"><userinput>cat &gt; /etc/shells &lt;&lt; "EOF"
+<literal># Begin /etc/shells
+
+/bin/sh
+/bin/bash
+
+# End /etc/shells</literal>
+EOF</userinput></screen>
+
+</sect1>