/usr/share/gEDA/sym/micro/6821-1.sym is in geda-symbols 1:1.8.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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refdes=U?
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comment=dont_use this symbol: nonstandard symwidth, bad graphic
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net=GND:1
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net=Vcc:20
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footprint=DIP40
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description=PIA peripheral interface line
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numslots=0
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author=Werner Hoch <werner.hoATgmx.de>
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6821
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