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From "Gavin (JIRA)" <>
Subject [jira] Commented: (FOR-1047) Add Documentation For Using Debian Update Alternatives System To Set Up The Forrest Environment
Date Tue, 25 Sep 2007 22:28:51 GMT


Gavin commented on FOR-1047:

This looks good thanks, I suspect maybe we do not have any devs using Debian to confirm all
this works so we might have to trust your judgment on this. If no one objects in the meantime,
I will add this in a few days.

Thanks for the patch.

> Add Documentation For Using Debian Update Alternatives System To Set Up The Forrest Environment
> -----------------------------------------------------------------------------------------------
>                 Key: FOR-1047
>                 URL:
>             Project: Forrest
>          Issue Type: New Feature
>          Components: Documentation and website
>    Affects Versions: 0.8
>            Reporter: Steven Coco
>            Priority: Minor
> I believe that Forrest's documentation at:
> Documentation current/Using Forrest/Installing Forrest/Setting up the Environment/In
> should contain a section for setting up using the update-alternatives system. I am new
with Forrest, but it seems that it does not require any environment variables; this setup
is only to achieve putting the executable on the path. The alternatives system would then
be preferred for some, like myself, who do use it to administer these kinds of things.
> The following may be viable to use in the (English) docs for this purpose:
> * For systems the use the Debian update-alternatives system:
> If your system uses the alternatives system to manage application binaries and their
locations, you may use that to link Forrest into your system's binary directory, instead of
explicitly exporting environment variables. To check if your system has the alternatives system
installed, execute this command:
> update-alternatives --version
> Update-alternatives will print its version if it is installed. If so, you may then add
an entry for Forrest. Installing an update-alternatives entry may need to be run with root
privileges. On some systems, that can be achieved with the "sudo" command, which executes
single commands as the super user: for example, Ubuntu's GNU/Linux system uses this feature.
Or you may need to contact a system administrator to install.
> To install a Forrest entry, first, gather the path to Forrest's executable, and also
note its version. In this example, Forrest has been unpacked and placed into '/opt/Apache/apache-forrest-0.8'
(the executable is at bin/forrest). Then execute this command (here we use sudo to execute
update-alternatives with root privileges):
> sudo update-alternatives --install /usr/bin/forrest forrest '/opt/Apache/apache-forrest-0.8/bin/forrest'
> The arguments to this command include '/usr/bin/forrest' as the system's location for
the binary link, 'forrest' as the update-alternatives short name for this entry, '/opt/Apache/apache-forrest-0.8/bin/forrest'
as the actual binary's location, and '800' as the priority.
> Alternatives entries have a priority because you may install other versions of Forrest,
and switch among them using update-alternatives: the highest priority entry will be selected
as the default until you explicitly select another one to become active. Here, we have chosen
a number based on Forrest's version: version 0.8 is installed, and priority 800 leaves room
for adding several other versions; for instance, 0.90 may use priority 900, and 1.0 may be
> Forrest should now be available on your command line. Execute:
> forrest --help
> Forrest should print its help text. For more help with the alternatives system, use:
> update-alternatives --help
> or
> man update-alternatives

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