/usr/share/xscreensaver/config/memscroller.xml is in xscreensaver-data-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 | <?xml version="1.0" encoding="ISO-8859-1"?>
<screensaver name="memscroller" _label="MemScroller">
<command arg="-root"/>
<number id="delay" type="slider" arg="-delay %"
_label="Frame rate" _low-label="Low" _high-label="High"
low="0" high="100000" default="10000"
convert="invert"/>
<select id="seedMode">
<option id="ram" _label="Dump memory"/>
<option id="random" _label="Draw random numbers" arg-set="-random"/>
</select>
<select id="drawMode">
<option id="color" _label="Draw in RGB"/>
<option id="mono" _label="Draw green" arg-set="-mono"/>
</select>
<boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
<_description>
This draws a dump of its own process memory scrolling across the screen
in three windows at three different rates.
Written by Jamie Zawinski; 2004.
</_description>
</screensaver>
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