Download SaVi 1.5.1 (July 2017)
SaVi is most useful with Geomview, which adds 3D rendering capabilities. The satellite plot scripts may also be useful.
sudo apt-get install savi
sudo apt-get install geomview
geomview -run savi
is enough to get up and running.
Ubuntu SaVi package and Geomview package information is available.
Debian SaVi package and Geomview package information is available.
The simplest method may be to install the Cygwin packages from the Cygwin installer. Information on the Cygwin packages is available.
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