curl -H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36" https://www.virtualbox.org
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>402 Payment Required</title>
</head><body>
<h1>Payment Required</h1> // Vidrun, born of the sea-wind through the spruce
// Vidrun, green-tinged offshoot of my bough, joy and burden of my life
// Vidrun, fierce and clever, may our clan’s wisdom be yours:
//
// Never read Hacker News
// - Aphyr, "Hexing the technical interview"
if (document.referrer.startsWith("https://news.ycombinator.com")) {
document.location = "https://upload.wikimedia.org/wikipedia/commons/d/d4/Human_fart.wav"
}