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Linux 2.6 - man page for rel (linux section 5)

rel(5)								       Files								    rel(5)

rel - Release resource file
The release resource file specifies which applications are are included in a release (system) based on Erlang/OTP. This file is used by the functions in systools when generating start scripts ( .script , .boot ) and release upgrade files ( relup ).
The release resource file should be called Name.rel . The .rel file contains one single Erlang term, which is called a release specification . The file has the following syntax: {release, {RelName,Vsn}, {erts, EVsn}, [{Application, AppVsn} | {Application, AppVsn, Type} | {Application, AppVsn, IncApps} | {Application, AppVsn, Type, IncApps}]}. * RelName = string() is the name of the release. * Vsn = string() is the version of the release. * EVsn = string() is the version of ERTS the release is intended for. * Application = atom() is the name of an application included in the release. * AppVsn = string() is the version of an application included in the release. * Type = permanent | transient | temporary | load | none is the start type of an application included in the release. If Type = permanent | transient | temporary , the application will be loaded and started in the corresponding way, see applica- tion(3erl) . If Type = load , the application will only be loaded. If Type = none , the application will be neither loaded nor started, although the code for its modules will be loaded. Defaults to permanent * IncApps = [atom()] is a list of applications that are included by an application included in the release. The list must be a subset of the included applications specified in the application resource file ( ) and overrides this value. Defaults to the empty list. Note: The list of applications must contain the kernel and stdlib applications.
application(3erl), relup(5), systools(3erl) Ericsson AB sasl rel(5)

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