Unicode_Hanzi_Expand walks all the links in Unicode_Variants.txt backand and forward and creates redundant cluster list of hanzis(kanjis).
./unihan_sql.sh
Download from Unicode.org and process data in SQLite3 and creates tab separated file
Generated all expanded hanzi(kanji) tab separated file 繁體字,简体字,日本の漢字異体字リスト