"sudo apt-key加法“没有任何效果。

Question

这个命令：

sudo add-apt-repository ppa:upubuntu-com/network -y

返回：

Cannot add PPA: ''This PPA does not support focal''.

然后，我将跳过“apt存储库”的基本部分，直接跳到重点。

这个命令：

sudo gpg --keyserver hkp://keyserver.ubuntu.com:80 --recv A5D712AEE06E6293
sudo gpg -a --export A5D712AEE06E6293 | sudo apt-key add -
sudo bash -c "echo -e 'deb http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily main\ndeb-src http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily main' > /etc/apt/sources.list.d/upubuntu-com-ubuntu-network-wily.list"

返回正确的输出，但当我运行时：

sudo apt-get update

同样返回错误：

W: GPG error: http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily Release: The following signatures were invalid: DED04C8CBB517AE45B073F12A5D712AEE06E6293
E: The repository 'http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily Release' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

资料库：

deb [ trusted=yes allow-insecure=yes allow-weak=yes allow-downgrade-to-insecure=yes check-valid-until=no ] http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily main
deb-src [ trusted=yes allow-insecure=yes allow-weak=yes allow-downgrade-to-insecure=yes check-valid-until=no ] http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily main

有命令：

sudo apt-get update --allow-unauthenticated --allow-insecure-repositories

没有效果，但错误消息变得更短：

W: GPG error: http://ppa.launchpad.net/upubuntu-com/network/ubuntu wily Release: The following signatures were invalid: DED04C8CBB517AE45B073F12A5D712AEE06E6293

Answer 1

有争议的PPA已经过时了，它最近支持的Ubuntu版本是“狡猾的”(15.10)。您不应该在任何当前支持的Ubuntu版本上使用这样的PPA。

请参见：如果存储库/PPA没有发布文件，我能做什么？，特别是N0rbert的回答可能会对您有所帮助。