proxy - 如何暂时禁用用于安装软件包的 apt 代理设置

Question

Apt 能够使用代理来安装附加包和依赖项。我正在处理一个 Python 项目，我需要一些额外的包来提供一个库。

---> sudo apt-get update
Err:1 http://security.ubuntu.com/ubuntu bionic-security InRelease
  Could not resolve 'proxy.internal'
Err:2 http://archive.ubuntu.com/ubuntu bionic InRelease
  Could not resolve 'proxy.internal'
Err:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
  Could not resolve 'proxy.internal'
Err:4 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
  Could not resolve 'proxy.internal'
Reading package lists... Done
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic/InRelease  Could not resolve 'proxy.internal'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease  Could not resolve 'proxy.internal'
W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease  Could not resolve 'proxy.internal'
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease  Could not resolve 'proxy.internal'
W: Some index files failed to download. They have been ignored, or old ones used instead.

如何暂时禁用代理(不改变永久选项/设置)？最好从命令行。

Answer 1

暂时禁用代理配置而不改变永久设置的最快方法是使用如下命令行选项:

sudo apt-get -o Acquire::http::proxy=false install <package>

这使用户可以通过代理在开放/公共(public)/家庭网络和公司环境之间移动。来自手册页:

   -o, --option
       Set a Configuration Option; This will set an arbitrary configuration option. The syntax is -o
       Foo::Bar=bar.  -o and --option can be used multiple times to set different options.