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<?xml version="1.0" encoding="utf-8"?>
<chapter id="sessions-0">
<title>Session Management</title>
<highlights>
<para>This chapter introduces session management, and describes
how to set session defaults. The chapter also contains information on sessions
and login scripts.</para>
</highlights>
<sect1 id="sessions-1">
<title>Introduction</title>
<indexterm>
<primary>sessions</primary>
<secondary>introduction</secondary>
</indexterm>
<para>A GNOME desktop session occurs between the time that a user
logs in to the GNOME desktop and the time that the user logs out. The session
manager starts after the <application>Login Manager</application> authenticates
the user. The session manager enables the user to manage the session. For
example, a user can save the state of a session and return to that session
the next time that the user logs in. </para>
<para>At a minimum, the following applications run in a session:</para>
<itemizedlist>
<listitem>
<para>The session manager, <command>gnome-session</command>.</para>
</listitem>
<listitem>
<para>The <application>GConf</application> X settings daemon, <command>gnome-settings-daemon</command>.</para>
</listitem>
<listitem>
<para>The <application>gnome-panel</application> application, which
runs the panels on the GNOME desktop.</para>
</listitem>
<listitem>
<para>The <application>Metacity</application> window manager.</para>
</listitem>
</itemizedlist>
</sect1>
<sect1 id="sessions-3">
<title>Setting Session Defaults</title>
<indexterm>
<primary>sessions</primary>
<secondary>setting defaults</secondary>
</indexterm>
<para>The following table lists the files that contain default
session information:</para>
<informaltable frame="topbot">
<tgroup cols="2" colsep="0" rowsep="0">
<colspec colwidth="51.80*"/>
<colspec colwidth="48.20*"/>
<thead>
<row rowsep="1">
<entry valign="top">
<para>File</para>
</entry>
<entry valign="top">
<para>Description</para>
</entry>
</row>
</thead>
<tbody>
<row>
<entry valign="top">
<para>
<filename>/usr/share/gnome/default.session</filename>
</para>
</entry>
<entry valign="top">
<para>Default session file.
Default session details are stored in this file.</para>
</entry>
</row>
<row>
<entry valign="top">
<para>
<filename>$HOME/.gnome2/session</filename>
</para>
</entry>
<entry valign="top">
<para>User session file. When a user modifies the session,
the details are stored in this file.</para>
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
<para>To set default session details for all users, modify the default session
file. </para>
<para>To restore the default session settings for a user, delete the session
file from the home directory of the user. If no user session file is present,
the default settings in <filename>/usr/share/gnome/default.session</filename>
are used. </para>
<para>To save the current session as the default session, users can run the <command>gnome-session-save</command> command. </para>
</sect1>
<sect1 id="sessions-2">
<title>Login Scripts</title>
<indexterm>
<primary>sessions</primary>
<secondary>login scripts</secondary>
</indexterm>
<para>The GNOME desktop does not support system-wide login scripts
or logout scripts. The session manager only allows users to configure user
sessions. Users can configure non-session-managed startup applications with
the <application>Sessions</application> preference tool.</para>
<tip>
<para>You can work around the lack of support for system-wide login scripts.
To create a system-wide login script, create the script in the <filename>/usr/dt/config/Xsession.d</filename> directory. Name the script as follows:</para>
<para>
<filename><replaceable>number_greater_than_1000</replaceable>.<replaceable>name</replaceable></filename>
</para>
<para>For example, name the script <filename>1050.login</filename>. For more
information on the <filename>/usr/dt/config/Xsession.d</filename> file, see <citetitle>The XSession File</citetitle> in the <citerefentry><refentrytitle>dtlogin</refentrytitle><manvolnum>1</manvolnum></citerefentry> man page.</para>
</tip>
</sect1>
</chapter>
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