/usr/share/alsa/init/info is in alsa-utils 1.0.27.2-1ubuntu2.
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 | # show information about card
PRINT="CARDINFO:\n"
PRINT=" CARDINFO{id}=\"$CARDINFO{id}\"\n"
PRINT=" CARDINFO{card}=\"$CARDINFO{card}\"\n"
PRINT=" CARDINFO{driver}=\"$CARDINFO{driver}\"\n"
PRINT=" CARDINFO{name}=\"$CARDINFO{name}\"\n"
PRINT=" CARDINFO{longname}=\"$CARDINFO{longname}\"\n"
PRINT=" CARDINFO{mixername}=\"$CARDINFO{mixername}\"\n"
PRINT=" CARDINFO{components}=\"$CARDINFO{components}\"\n"
# sysfs stuff
PRINT="sysfs:\n"
ATTR{bus}=="*", PRINT=" ATTR{bus}=\"$ATTR{bus}\"\n"
ATTR{class}=="*", PRINT=" ATTR{class}=\"$ATTR{class}\"\n"
ATTR{driver}=="*", PRINT=" ATTR{driver}=\"$ATTR{driver}\"\n"
ATTR{vendor}=="*", PRINT=" ATTR{vendor}=\"$ATTR{vendor}\"\n"
ATTR{device}=="*", PRINT=" ATTR{device}=\"$ATTR{device}\"\n"
ATTR{subsystem_vendor}=="*", \
PRINT=" ATTR{subsystem_vendor}=\"$ATTR{subsystem_vendor}\"\n"
ATTR{subsystem_device}=="*", \
PRINT=" ATTR{subsystem_device}=\"$ATTR{subsystem_device}\"\n"
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