Can be executed within android root dir for finding identical proprietary files

list-identical-blobs.sh

#!/bin/bash
vendor="sony"
devices=("akari" "akatsuki" "aurora" "xz2c")

cmp_all() {
  for device in "${devices[@]:1}"; do
    if ! cmp -s "vendor/$vendor/${devices[0]}/$1" "vendor/$vendor/$device/$1"; then
      return 1
    fi
  done

  return 0
}

find $(printf "vendor/$vendor/%s " "${devices[@]}") -type f | cut -d'/' -f4- | sort -f | uniq -c | grep "${#devices[@]} " | awk '{print $2}' |
  while IFS= read -r line; do
    if cmp_all $line; then
      echo "$line"
    fi
  done