Heimdall is a cross-platform open-source tool suite used to flash
firmware (aka ROMs) onto Samsung mobile devices.

The "Heimdall Suite" is composed by:
Heimdall command line
Heimdall Frontend.

Heimdall command line package includes: Heimdall command line tool and
udev rules (for non-root USB access).
Heimdall Frontend package includes: Heimdall Frontend - graphical UI only.

So, this script comes with an option (GUI) that can be set at build time.
The default is GUI=yes, but if you don't want to install the frontend, you
could do that by setting GUI to 'no' in command line:
GUI=no ./heimdall.SlackBuild

Don't forget to reloaded udev after installing this package
/etc/rc.d/rc.udev reload

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DISCLAIMER:

    This software attempts to flash your Galaxy S device. The very nature of
    flashing is dangerous. As with all flashing software, Heimdall has the
    potential to damage (brick) your phone if not used carefully. If you're
    concerned, don't use this software. Flashing ROMs onto your phone may also
    void your warranty. Benjamin Dobell and Glass Echidna are not responsible
    for the result of your actions.

    Heimdall (c) 2010-2013 Benjamin Dobell, Glass Echidna
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