无法在Debian稳定中安装最新的R统计软件包

Question

我正试图在Debian稳定性(Buster)上安装最新的R软件包，本页的说明如下：https://cloud.r-project.org/

我在/etc/apt/sources.list中添加了以下内容：

deb https://cran.csiro.au/bin/linux/debian buster-cran35/

但是，当我运行sudo apt-get update时，我会得到以下错误：

$ sudo apt-get update
Hit:1 http://deb.debian.org/debian buster InRelease                   
Hit:2 http://deb.debian.org/debian-security buster/updates InRelease  
Hit:3 http://deb.debian.org/debian buster-updates InRelease          
Hit:4 http://deb.debian.org/debian buster-backports InRelease        
Get:5 https://cran.csiro.au/bin/linux/debian buster-cran35/ InRelease [4,375 B]
Err:5 https://cran.csiro.au/bin/linux/debian buster-cran35/ InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FCAE2A0E115C3D8A
Reading package lists... Done
W: GPG error: https://cran.csiro.au/bin/linux/debian buster-cran35/ InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY FCAE2A0E115C3D8A
E: The repository 'https://cran.csiro.au/bin/linux/debian buster-cran35/ InRelease' 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.

尽管有以下尝试，我还是无法消除这个GPG错误：

sudo apt-get install debian-keyring

sudo launchpad-getkeys

sudo aptitude install debian-archive-keyring

如何解决这个错误？

Answer 1

您需要使用错误消息中给出的id (假设您信任存储库)来导入存档键：

apt-key adv --keyserver keys.gnupg.net --recv-key FCAE2A0E115C3D8A