/usr/share/xscreensaver/config/glsnake.xml is in xscreensaver-gl-extra 5.15-3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | <?xml version="1.0" encoding="ISO-8859-1"?>
<screensaver name="glsnake" _label="GLSnake">
<command arg="-root"/>
<hgroup>
<vgroup>
<number id="delay" type="slider" arg="-delay %"
_label="Frame rate" _low-label="Low" _high-label="High"
low="0" high="100000" default="30000"
convert="invert"/>
<number id="duration" type="slider" arg="-statictime %"
_label="Duration" _low-label="1" _high-label="30 seconds"
low="1000" high="30000" default="5000"/>
<number id="packing" type="slider" arg="-explode %"
_label="Packing" _low-label="Tight" _high-label="Loose"
low="0.0" high="0.5" default="0.03"/>
</vgroup>
<vgroup>
<number id="angvel" type="slider" arg="-angvel %"
_label="Angular velocity" _low-label="Slow" _high-label="Fast"
low="0.05" high="5.0" default="1.0"/>
<number id="yangvel" type="slider" arg="-yangvel %"
_label="Y angular velocity" _low-label="Slow" _high-label="Fast"
low="0.0" high="1.0" default="0.10"/>
<number id="zangvel" type="slider" arg="-zangvel %"
_label="Z angular velocity" _low-label="Slow" _high-label="Fast"
low="0.0" high="1.0" default="0.14"/>
</vgroup>
</hgroup>
<hgroup>
<boolean id="labels" _label="Show titles" arg-set="-titles"/>
<boolean id="wire" _label="Wireframe" arg-set="-wireframe"/>
<boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
</hgroup>
<_description>
Draws a simulation of the Rubik's Snake puzzle. See also the "Rubik"
and "Cube21" screen savers.
http://en.wikipedia.org/wiki/Rubik%27s_Snake
Written by Jamie Wilkinson, Andrew Bennetts, and Peter Aylett; 2002.
</_description>
</screensaver>
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