从Debian Jessie的backports安装Certbot

Question

在Debian上安装Certbot时，根据certbot安装指令的说法，我需要支持端口。失败了。然后我试着做向Debian添加backbortssources.list文件。它也失败了。那么如何在Jessie身上安装Certbot呢？我还想知道如何添加backports。

这是我的尝试：

root@deployer:~# apt-get install certbot
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package certbot
root@deployer:~# apt-get install certbot
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package certbot
root@deployer:~# 
root@deployer:~# cat /etc/*-release|grep VER
VERSION_ID="8"
VERSION="8 (jessie)"
root@deployer:~# echo deb http://ftp.debian.org/debian/dists/jessie-backports/ jessie-backports main > /etc/apt/sources.list
root@deployer:~# cat /etc/apt/sources.list
deb http://ftp.debian.org/debian/dists/jessie-backports/ jessie-backports main
root@deployer:~# apt-get update
Ign http://ftp.debian.org jessie-backports InRelease
Ign http://ftp.debian.org jessie-backports Release.gpg
Ign http://ftp.debian.org jessie-backports Release
Err http://ftp.debian.org jessie-backports/main amd64 Packages
  404  Not Found [IP: 130.89.148.12 80]
Ign http://ftp.debian.org jessie-backports/main Translation-en_US
Ign http://ftp.debian.org jessie-backports/main Translation-en
W: Failed to fetch http://ftp.debian.org/debian/dists/jessie-backports/dists/jessie-backports/main/binary-amd64/Packages  404  Not Found [IP: 130.89.148.12 80]

E: Some index files failed to download. They have been ignored, or old ones used instead.
root@deployer:~# apt-get install certbot
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package certbot
root@deployer:~# 

Answer 1

要向sources.list添加后端，必须编辑/etc/apt/sources.list文件，添加以下行：

deb http://ftp.debian.org/debian jessie-backports main

编辑source.list文件后，必须在安装package.So之前运行apt-get更新：

apt-get update

现在，您可以安装您的软件包：

apt-get -t jessie-backports install "package"