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+## 普通用户
+
+```bash
+nano ~/.bashrc
+```
+
+```
+# Proxy Configuration
+export HTTP_PROXY="http://192.168.31.9:7890"
+export HTTPS_PROXY="http://192.168.31.9:7890"
+export http_proxy="http://192.168.31.9:7890"
+export https_proxy="http://192.168.31.9:7890"
+
+# 可选：设置不走代理的地址 (本地地址和内部域名)
+export NO_PROXY="localhost,127.0.0.1,::1,192.168.*,10.*"
+export no_proxy="localhost,127.0.0.1,::1,192.168.*,10.*"
+```
+
+保存并退出（`Ctrl + O` `Enter` `Ctrl + X`）
+
+```bash
+source ~/.bashrc
+```
+
+## 对所有用户生效
+
+```bash
+sudo nano /etc/environment
+```
+
+```
+HTTP_PROXY="http://192.168.31.9:7890"
+HTTPS_PROXY="http://192.168.31.9:7890"
+http_proxy="http://192.168.31.9:7890"
+https_proxy="http://192.168.31.9:7890"
+NO_PROXY="localhost,127.0.0.1,::1"
+no_proxy="localhost,127.0.0.1,::1"
+```
+
+保存并退出（`Ctrl + O` `Enter` `Ctrl + X`）
+
+```bash
+sudo reboot
+```
+
+重启系统才能生效
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