清除ubuntu代理设置

sudo vim /etc/apt/apt.conf
有类似的句子删掉:

Acquire::http::Proxy “http://yourproxyaddress:proxyport/”

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vim ~/.bashrc

有类似的删掉:

http_proxy=http://yourproxyaddress:proxyport

exporthttp_proxy

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用env | grep -i proxy 检测

若显示类似的：

http_proxy=http://localhost:42165

HTTP_PROXY=http://localhost:42165

命令行输入

unset http_proxy

unset HTTP_PROXY

然后sudo vim /etc/environment里面也删掉这几个变量