>Psychtoolbox

DownloadAdditionsForLinux(targetdirectory [, flavor]);

THIS FUNCTION DOES NO LONGER WORK, AS GITHUB HAS REMOVED THEIR
SUBVERSION FRONTEND, WHICH IT CRITICALLY REQUIRES, FROM THEIR SERVICES
PERMANENTLY AT 8TH JANUARY 2024.

Due to the lack of financial support for Psychtoolbox by the vast
majority of our non-paying users, we did not and currently do not have
the funding to work on a good alternative solution for this.

Try to manually download and install the Datapixx or Eyelink mex files,
which this function would normally install for you. Other than that,
see http://psychtoolbox.org/download.html#alternate-download for a
workable, although way less convenient and advanced, download and
installation method, via zip file download and execution of
SetupPsychtoolbox(). Good luck!

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Install missing Matlab or Octave mex files for versions of the Psychtoolbox
which are directly provided by some Linux distributions, e.g., Ubuntu 20.04
and later.

You *DO NOT NEED* this function if you downloaded Psychtoolbox from its
home-site via DownloadPsychtoolbox(), or if you install Psychtoolbox from
the NeuroDebian repository. If you installed from NeuroDebian, then for
Matlab nothing extra needs to be done. For Octave, to add the Datapixx
or Eyelink functions execute this in a terminal:

sudo apt install octave-psychtoolbox-3-nonfree

If you would call this function from within Octave, it will download only
a few additional addon files for the Octave Psychtoolbox. Currently the
only added files are the Eyelink mex files for SR-Research Eyelink
Gazetrackers, and the Datapixx mex file for VPixx Inc. products.