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gpgでパスフレーズを聞かれずにファイルを復号化する方法

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バッチファイルなどからgpgを使うには

簡単で、以下の通りのコマンドでOK

echo 【復号化パスフレーズ】| gpg --passphrase-fd 0 --decrypt --batch --no-secmem-warning 【復号化したいgpgファイル】

「--passphrase-fd 0」と「--batch」オプションを用いて、標準出力でパスフレーズを渡す方法でとっても簡単です。

なお、「--no-secmem-warning」は「gpg: Warning: using insecure memory!」のエラーが出ないようにするおまじないです。

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