为apt、yum和dnf设置代理，以及Linux全局代理

apt、yum、dnf配置代理

apt

修改/etc/apt/apt.conf

# http代理
Acquire::http::proxy "http://127.0.0.1:8080";
Acquire::ftp::proxy "http://127.0.0.1:8080";
Acquire::https::proxy "http://127.0.0.1:8080";

# socks5代理
Acquire::http::proxy "socks5h://127.0.0.1:8080";
Acquire::ftp::proxy "socks5h://127.0.0.1:8080";
Acquire::https::proxy "socks5h://127.0.0.1:8080";

# 密码认证(ftp、https相同)
Acquire::http::proxy "http://username:password@127.0.0.1:8080";

Acquire::http::proxy "socks5h://username:password@127.0.0.1:8080";

yum

修改/etc/yum/yum.conf

# http代理
proxy=http://127.0.0.1:8080

# socks5代理
proxy=socks5h://127.0.0.1:8080

# 密码认证(socks5相同)
proxy=http://127.0.0.1:8080
proxy_username=username
proxy_password=password

dnf

修改/etc/dnf/dnf.conf

配置内容与yum相同

全局代理

CentOS修改/etc/skel/.bash_profile
Debian修改/etc/skel/.bashrc
添加内容

http_proxy=http://127.0.0.1:8080
https_proxy=http://127.0.0.1:8080
export http_proxy https_proxy
no_proxy=192.168.26.193,localhost,127.0.0.1

可以直接使用all_proxy，替代http_proxy和https_proxy
no_proxy为不走代理的地址

执行
source /etc/skel/.bash_profile
或
source /etc/skel/.bashrc
使更改生效

来源：
https://blog.csdn.net/wonxxx/article/details/52917464

https://blog.csdn.net/bojie5744/article/details/42148719