Git

The note is partly generated by “ChatGPT.”

The article “Proxy set, but ssh -T git@github.com still fails” explains that Git SSH cannot use an HTTP proxy and provides a solution. However, in my experience, even using that solution, network performance can be unreliable. Therefore, if you can use HTTPS for Git, I recommend switching from SSH to HTTPS directly. Below is the method to switch to HTTPS and configure a Personal Access Token (PAT) for authentication.

The note is generated by ChatGPT.

Observation — Proxy set, but SSH still fails

Although you set http_proxy / https_proxy (or all_proxy), running:

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ssh -T git@github.com

still times out or fails.

Root cause — SSH does NOT use the HTTP proxy (key point)

Terminal HTTP/SOCKS environment variables affect HTTP/HTTPS-aware programs (curl, wget, git clone https://…, etc.), but OpenSSH does not honor those variables. SSH opens a raw TCP connection and must be explicitly told to use a proxy — otherwise it tries a direct connection and gets blocked by the network/firewall.

The note is generated by 豆包.

一、配置目的

通过 SSH Key 实现与远程仓库（GitHub/GitLab/Gitee 等）的无密码安全连接，避免每次操作远程仓库时重复输入账号密码。

二、操作步骤

1. 检查本地是否已存在 SSH Key

首先确认本地是否已有生成好的 SSH Key，避免重复创建。

❗️The note is generated by DeepSeek.

🔧 配置 Git 使用 HTTP 代理

您可以通过 Git 命令行来设置全局的 HTTP 和 HTTPS 代理。

1. 设置全局代理：
   打开终端（例如 Windows 的 Git Bash、macOS 的 Terminal 或 Linux 的 Shell），执行以下命令：

1. 删除对一个文件的追踪

   • command:

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   git rm --cached 'file_name' # 如果是一个folder则加上参数'-r' # --cached会保留本地文件，如不需保留则可省略该参数。

   • 如果希望该文件以后不再被 Git 追踪，可以将其添加到 .gitignore 文件中，避免误提交：

   1	echo "file_name" >> .gitignore

2. 本地分支改名：