https://blog.margrop.net/en/tag/environment/ Recent content in Environment on Margrop Blog Hugo en-US Sat, 30 May 2026 16:00:00 +0800 https://blog.margrop.net/en/post/tmux-zsh-http-proxy-mystery/ Sat, 30 May 2026 16:00:00 +0800 https://blog.margrop.net/en/post/tmux-zsh-http-proxy-mystery/ <h1 id="preface">Preface</h1> <p>Today I ran into a truly bizarre problem: in a freshly created tmux session, <code>echo $http_proxy</code> showed a valid proxy address. But I distinctly remember that my <code>.zshrc</code> only defines two aliases — <code>proxy_on</code> and <code>proxy_off</code> — both of which require manual invocation and don&rsquo;t run automatically.</p> <p>The weirdest part: my main shell shows <code>http_proxy</code> as empty, but as soon as I enter tmux, it&rsquo;s there. I spent nearly an hour tracking this down, so I&rsquo;m documenting it for posterity.</p>