bank_code_branch_code_list.sh

#!/bin/bash
# 銀行名・支店名 結合CSV出力

echo "bank_code,bank_name,branch_code,branch_name" > banks_branches.csv

curl -s "https://bank.teraren.com/banks.json?per=5000" \
  | jq -r '.[] | [.code, .name] | @tsv' \
  | while IFS=$'\t' read -r bank_code bank_name; do
      curl -s "https://bank.teraren.com/banks/${bank_code}/branches.json?per=5000" \
        | jq -r --arg bc "$bank_code" --arg bn "$bank_name" \
          '.[] | [$bc, $bn, .code, .name] | @csv' \
        >> banks_branches.csv
      sleep 0.25  # 300req/min/IP のレート制限対策（1リクエストあたり200ms以上）
    done