这篇指南讲解了如何在本地快速生成 SSH 密钥、配置 SSH Config、实现服务器免密登录，并将密钥用于 GitHub/GitLab 的代码拉取与提交签名。内容涵盖密钥生成、配置模板、免密登录方式、Git 提交签名设置，以及在各个平台添加公钥的步骤。最后还提供常见错误排查与常用命令、不同算法对比和安全建议，帮助读者一站式完成 SSH 环境配置。

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一个常见但经常被忽视的前端问题：点击按钮后需要请求接口拿到 URL 并跳转到新标签页，但不能被浏览器拦截，也要保持安全隔离。本文给出通用、可复用、工程化的最佳实践。

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