gnupg报错 gpg: no writable keyring found: Not found

使用如下命令创建秘钥时，gnupg报错：

~$ apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 51716619E084DAB9

Executing: /tmp/apt-key-gpghome.JaQF9UeFHa/gpg.1.sh --keyserver keyserver.ubuntu.com --recv-keys 51716619E084DAB9

gpg: key 51716619E084DAB9: public key "Michael Rutter <marutter@gmail.com>" imported

gpg: Total number processed: 1

gpg: imported: 1

gpg: no writable keyring found: Not found

gpg: error reading '[stdin]': General error

gpg: import from '[stdin]' failed: General error

gpg: Total number processed: 0

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说明：已经创建了.gnupg目录，并运行了gpg生成钥匙对，如下

~$ mkdir .gnupg

~$ chmod 555 .gnupg

~$ gpg --gen-key

回答

改用root权限的sudo命令，如下：

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 51716619E084DAB9