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Continue to Chataptの期限切れ公開鍵の更新手順とCawbirdの公開鍵の期限切れ https://servercan.net/blog/2022/01/apt%e3%81%ae%e6%9c%9f%e9%99%90%e5%88%87%e3%82%8c%e5%85%ac%e9%96%8b%e9%8d%b5%e3%81%ae%e6%9b%b4%e6%96%b0%e6%89%8b%e9%a0%86%e3%81%a8cawbird%e3%81%ae%e5%85%ac%e9%96%8b%e9%8d%b5%e3%81%ae%e6%9c%9f%e9%99%90/