/var/lib/ieee-data/update.d/kinfocenter_oui.sh is in kinfocenter 4:5.12.4-0ubuntu1.
This file is owned by root:root, with mode 0o755.
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 | #!/bin/sh
dirname="$1"
filename="$2"
if [ "oui.txt" != $(basename "$filename") ]; then
# Not for us
exit 0
fi
awk '
/base 16/ {
if (NF>3) {
s=$1;
for (i=4; i<=NF; i++) s=s " " $i;
print s;
}
}' $filename > $dirname/kinfocenter_oui.db
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