/usr/share/xscreensaver/config/barcode.xml is in xscreensaver-data-extra 5.15-2ubuntu1.
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 | <?xml version="1.0" encoding="ISO-8859-1"?>
<screensaver name="barcode" _label="Barcode">
<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="mode">
<option id="scroll" _label="Scrolling barcodes"/>
<option id="scroll" _label="Barcode grid" arg-set="-mode grid"/>
<option id="clock12" _label="Barcode clock (AM/PM)" arg-set="-mode clock12"/>
<option id="clock24" _label="Barcode clock (24 hour)" arg-set="-mode clock24"/>
</select>
<boolean id="showfps" _label="Show frame rate" arg-set="-fps"/>
<_description>
Draws a random sequence of colorful barcodes scrolling across your
screen. CONSUME!
The barcodes follow the UPC-A, UPC-E, EAN-8 or EAN-13 standards.
http://en.wikipedia.org/wiki/Universal_Product_Code
http://en.wikipedia.org/wiki/European_Article_Number
Written by Dan Bornstein; 2003.
</_description>
</screensaver>
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