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<H1>rel</H1>
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<H3>FILE</H3>
<DIV CLASS=REFBODY>
rel
</DIV>
<H3>FILE SUMMARY</H3>
<DIV CLASS=REFBODY>
Release resource file
</DIV>
<H3>DESCRIPTION</H3>
<DIV CLASS=REFBODY>
<P>The <STRONG>release resource file</STRONG> specifies which applications are
are included in a release (system) based on Erlang/OTP.
<P>This file is used by the functions in <CODE>systools</CODE> when generating
start scripts (<CODE>.script</CODE>, <CODE>.boot</CODE>) and release upgrade
files (<CODE>relup</CODE>).
</DIV>
<H3>FILE SYNTAX</H3>
<DIV CLASS=REFBODY>
<P>The release resource file should be called <CODE>Name.rel</CODE>.
<P>The <CODE>.rel</CODE> file contains one single Erlang term, which is
called a <STRONG>release specification</STRONG>. The file has the
following syntax:
<PRE>
{release, {RelName,Vsn}, {erts, EVsn},
[{Application, AppVsn} |
{Application, AppVsn, Type} |
{Application, AppVsn, IncApps} |
{Application, AppVsn, Type, IncApps}]}.
</PRE>
<P>
<UL>
<LI>
<CODE>RelName = string()</CODE> is the name of the release.<BR>
</LI>
<LI>
<CODE>Vsn = string()</CODE> is the version of the release.<BR>
</LI>
<LI>
<CODE>EVsn = string()</CODE> is the version of ERTS the release is
intended for.<BR>
</LI>
<LI>
<CODE>Application = atom()</CODE> is the name of an application
included in the release.<BR>
</LI>
<LI>
<CODE>AppVsn = string()</CODE> is the version of an application
included in the release.<BR>
</LI>
<LI>
<CODE>Type = permanent | transient | temporary | load | none</CODE>
is the start type of an application included in the release.<BR>
If <CODE>Type = permanent | transient | temporary</CODE>,
the application will be loaded and started in the corresponding
way, see <CODE>application(3)</CODE>. If <CODE>Type = load</CODE>,
the application will only be loaded. If <CODE>Type = none</CODE>,
the application will be neither loaded nor started, although
the code for its modules will be loaded.
Defaults to <CODE>permanent</CODE><BR>
</LI>
<LI>
<CODE>IncApps = [atom()]</CODE> is a list of applications that are
included by an application included in the release.<BR>
The list must be a subset of the included applications
specified in the application resource file
(<CODE>Application.app</CODE>) and overrides this value. Defaults
to the empty list.<BR>
</LI>
</UL>
<P>
<TABLE CELLPADDING=4>
<TR>
<TD VALIGN=TOP><IMG ALT="Note!" SRC="note.gif"></TD>
<TD>
<P>The list of applications must contain the <CODE>kernel</CODE> and
<CODE>stdlib</CODE> applications. </TD>
</TR>
</TABLE>
</DIV>
<H3>SEE ALSO</H3>
<DIV CLASS=REFBODY>
<P>application(3), relup(4), systools(3)
</DIV>
<H3>AUTHORS</H3>
<DIV CLASS=REFBODY>
Gunilla Hugosson - support@erlang.ericsson.se<BR>
</DIV>
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<HR>
<SMALL>sasl 2.0<BR>
Copyright © 1991-2004
<A HREF="http://www.erlang.se">Ericsson AB</A><BR>
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