Найден корректный robots.txt
Файл управления сканированием сайта роботами
?
Robots.txt указывает поисковым роботам, какие страницы сканировать, а какие — нет. Ошибки в файле могут случайно закрыть важные разделы от индексации.
Кол-во редиректов для файла robots.txt 3 слишком большое! Это может вызывать затруднение при индексации поисковыми роботами!
Проверяемая страница не запрещена в robots.txt.
Цепочка редиректов для файла robots.txt:
http://ide.cs50.io/robots.txt
301 MovedPermanently
https://ide.cs50.io/robots.txt
301 MovedPermanently
https://cs50.dev/
200 OK
Показать содержимое robots.txt
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, width=device-width">
<meta property="og:description" content="CS50's adaptation of Codespaces for students and teachers">
<meta property="og:image" content="https://cs50.dev/static/dependencies-1.png">
<meta property="og:image:height" content="820">
<meta property="og:image:type" content="image/png">
<meta property="og:image:width" content="1093">
<meta property="og:title" content="Visual Studio Code for CS50">
<meta property="og:type" content="website">
<meta property="og:url" content="https://cs50.dev/">
<meta property="twitter:card" content="summary_large_image">
<meta property="twitter:creator" content="@cs50">
<meta property="twitter:description" content="CS50's adaptation of Codespaces for students and teachers">
<meta property="twitter:image" content="https://cs50.dev/static/dependencies-1.png">
<meta property="twitter:site" content="@cs50">
<meta property="twitter:title" content="Visual Studio Code for CS50">
<!-- https://code.visualstudio.com/ -->
<link href="/static/favicon.ico" rel="icon" type="image/ico">
<script>
window.FontAwesomeConfig = { autoReplaceSvg: false };
</script>
<link href="/static/dist/main.css?1787334741" rel="stylesheet">
<script src="/static/dist/main.js?1787334741"></script>
<!-- https://getbootstrap.com/docs/5.3/customize/color-modes/#javascript -->
<script>
function getPreferredTheme() {
return window.matchMedia('(prefers-color-scheme: dark)').matches ? 'dark' : 'light';
}
function setTheme(theme) {
if (window.matchMedia('(prefers-color-scheme: dark)').matches) {
document.documentElement.setAttribute('data-bs-theme', 'dark')
}
else {
document.documentElement.setAttribute('data-bs-theme', theme)
}
}
window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', () => {
setTheme(getPreferredTheme());
});
setTheme(getPreferredTheme());
</script>
<script>
const LOCALES = [["English", "en", "en_US.utf8"], ["Chinese", "zh-cn", "zh_CN.utf8"], ["Chinese", "zh-tw", "zh_TW.utf8"], ["French", "fr", "fr_FR.utf8"], ["German", "de", "de_DE.utf8"], ["Italian", "it", "it_IT.utf8"], ["Spanish", "es", "es_ES.utf8"], ["Japanese", "ja", "ja_JP.utf8"], ["Korean", "ko", "ko_KR.utf8"], ["Russian", "ru", "ru_RU.utf8"], ["Portuguese", "pt-br", "pt_BR.utf8"], ["Turkish", "tr", "tr_TR.utf8"], ["Polish", "pl", "pl_PL.utf8"], ["Czech", "cs", "cs_CZ.utf8"]];
$(function() {
// Supported
const BROWSERS = {
chrome: {
href: 'https://www.google.com/chrome/',
name: 'Chrome',
recommended: true,
version: '103'
},
edge: {
href: 'https://www.microsoft.com/edge',
name: 'Edge',
recommended: true,
version: '103'
},
firefox: {
href: 'https://www.mozilla.org/firefox/',
name: 'Firefox',
version: '103'
},
safari: {
href: 'https://support.apple.com/downloads/safari',
name: 'Safari',
recommended: false, // Don't recommend upgrading Safari (and, in turn, macOS)
version: '16.6'
}
};
// Parse User-Agent
const browser = bowser.getParser(window.navigator.userAgent);
// If mobile
if (browser.is('mobile')) {
$('#mobile').removeClass('d-none');
return;
}
// If supported
for (let key in BROWSERS) {
const checkTree = {};
checkTree[key] = '>=' + BROWSERS[key].version;
if (browser.satisfies(checkTree)) {
return;
}
}
// If recommended but outdated
for (let key in BROWSERS) {
if (BROWSERS[key].recommended) {
const checkTree = {};
checkTree[key] = '<' + BROWSERS[key].version;
if (browser.satisfies(checkTree)) {
$('#browser').html(BROWSERS[key].name);
$('#href').attr('href', BROWSERS[key].href);
$('#outdated').removeClass('d-none');
$('form[action="/open"] > button').attr('disabled', '');
return;
}
}
}
// If unsupported
const browsers = [];
for (let key in BROWSERS) {
if (BROWSERS[key].recommended) {
const $a = $('<a>').addClass('alert-link text-decoration-none').attr('href', BROWSERS[key].href).html(BROWSERS[key].name);
browsers.push($a.prop('outerHTML'));
}
}
const lf = new Intl.ListFormat('en', {type: 'disjunction'}); // https://stackoverflow.com/a/53883742
$('#browsers').html(lf.format(browsers));
$('#unsupported').removeClass('d-none');
$('form[action="/open"] > button').attr('disabled', '');
return;
});
$(function() {
// Infer user's locale
const languages = navigator.languages || [navigator.language];
outer: for (let language of languages) {
for (let locale of LOCALES) {
// Compare language-region, then just language
if (language === locale[1] || language.split('-')[0] === locale[1].split('-')[0]) {
$('input[name="lang"]').val(locale[2]);
break outer;
}
}
}
// Guess user's time zone
$('input[name="tz"]').val(moment.tz.guess(true));
// Disable button once clicked
$('form').on('submit', function() {
$('form button .fa-github').addClass('fa-spin');
$('form button').attr('disabled', '');
window.setTimeout(function() {
$('form button').removeAttr('disabled');
$('form button .fa-github').removeClass('fa-spin');
}, 30000);
});
});
</script>
<style>
.btn-success:focus {
-webkit-box-shadow: none;
box-shadow: none;
}
.container {
max-width: 960px;
}
a:not(.dropdown-item) {
text-decoration: none;
}
a:hover:not(.dropdown-item) {
text-decoration-line: underline;
text-decoration-style: solid;
text-underline-offset: 3px;
}
h1 a {
font-weight: 500;
}
h1 img {
height: 1em;
width: initial;
}
#codespace {
max-width: 100%;
width: 480px;
}
</style>
<title>Visual Studio Code for CS50</title>
</head>
<body>
<div class="container px-4 py-5">
<h1 class="display-6">
<a class="text-body text-decoration-none" href="/">
<span class="d-none d-md-inline">Visual Studio Code</span><span class="d-md-none">VS Code</span>
<small class="text-muted">for CS50</small>
</a>
<img alt="CS50 duck debugger" class="align-bottom mb-1 ps-1" data-bs-title="quack" data-bs-toggle="tooltip" src="/static/ddb50.gif">
</h1>
<p class="lead lh-sm mb-1">
CS50's adaptation of <a class="fw-bold text-success" href="https://github.com/features/codespaces">Codespaces</a> for students and teachers
</p>
<details class="mb-3 small">
<summary class="mb-2"><span class="ps-1">with these features</span></summary>
<ul class="mb-2">
<li><strong>Bash</strong>, using <code>bash</code></li>
<li><strong>C</strong>, using <code>clang</code> or <code>gcc</code></li>
<li><strong>C++</strong>, using <code>clang</code> or <code>g++</code></li>
<li><strong>Docker</strong>, using <code>docker</code>
<li><strong>Flask</strong>, using <code>flask</code></li>
<li><strong>HTML, CSS, and JavaScript</strong>, using <code>http-server</code></li>
<li><strong>Java</strong>, using <code>javac</code> and <code>java</code></li>
<li><strong>Lua</strong>, using <code>lua</code></li>
<li><strong>Node.js</strong>, using <code>node</code></li>
<li><strong>Python</strong>, using <code>python</code></li>
<li><strong>R</strong>, using <code>R</code> and <code>rstudio</code></li>
<li><strong>Ruby</strong>, using <code>ruby</code></li>
<li><strong>SQLite</strong>, using <code>sqlite3</code></li>
<li><strong>X Window System</strong>, using <code>x11vnc</code> and <code>novnc_proxy</code></li>
</ul>
<p class="mb-2">
Localized for
Chinese, Czech, English, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish, and Turkish.
</p>
<p class="mb-2">
Environments are based on <a class="text-success" href="https://cs50.readthedocs.io/cs50/codespace/">cs50/codespace</a>, which is based on <a class="text-success" href="https://cs50.readthedocs.io/cs50/cli/">cs50/cli</a>, which is based on Ubuntu 24.04. Other software can be installed with <code>apt</code>, <code>gem</code>, <code>npm</code>, and <code>pip</code>. Email <a class="text-success" href="mailto:sysadmins@cs50.harvard.edu">sysadmins@cs50.harvard.edu</a> with questions.
</p>
</details>
<div class="alert alert-danger d-inline-block d-none mb-3 small" id="mobile" role="alert">
You seem to be on a mobile device. Best to use a laptop or desktop!
</div>
<div class="alert alert-danger d-inline-block d-none mb-3 small" id="outdated" role="alert">
You seem to be using an outdated version of <span id="browser"></span>. To log in, <a class="alert-link" id="href">download and install the latest version</a>.
</div>
<div class="alert alert-danger d-inline-block d-none mb-3 small" id="unsupported" role="alert">
You seem to be using an <a class="alert-link" href="https://docs.github.com/en/codespaces/the-githubdev-web-based-editor#known-limitations">unsupported browser</a>. To log in, download and install the latest version of <span id="browsers"></span>.
</div>
<main>
<div class="mb-4">
<div class="btn-group mb-3">
<form action="/open" method="post">
<input name="lang" type="hidden">
<input name="tz" type="hidden">
<button autofocus class="btn btn-success rounded-end-0" type="submit">
<i class="fa-brands fa-github"></i>
<span class="ps-1">Log In</span>
</button>
</form>
<button aria-expanded="false" class="btn btn-success dropdown-toggle dropdown-toggle-split me-2" data-bs-reference="parent" data-bs-toggle="dropdown" type="button">
<span class="visually-hidden">Toggle Dropdown</span>
</button>
<div class="align-middle d-block d-sm-inline mt-2">
or browse <a class="fw-bold text-success" href="https://cs50.readthedocs.io/cs50.dev/">documentation</a>
</div>
<ul class="dropdown-menu">
<li>
<form action="/connect" method="post">
<input name="lang" type="hidden">
<input name="tz" type="hidden">
<button class="dropdown-item" type="submit">
<i class="fa-solid fa-up-right-from-square pe-1"></i>
Open in VS Code Desktop
</button>
</form>
</li>
<li><hr class="dropdown-divider"></li>
<li>
<a class="dropdown-item" href="/restart">
<i class="fa-solid fa-power-off pe-1"></i>
Restart Codespace
</a>
</li>
<li><hr class="dropdown-divider"></li>
<li><span class="dropdown-item-text fw-bold small text-muted">Backups</span></li>
<li><a class="dropdown-item" href="/commits">Commits</a></li>
<li><a class="dropdown-item" href="/repo">Repository</a></li>
</ul>
</div>
</div>
<img alt="Codespaces" class="rounded shadow-lg" id="codespace" src="/static/dependencies-2.png"> <!-- https://github.com/features/codespaces -->
</main>
</div>
<div class="fade modal" id="modal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<h1 class="modal-title fs-5" id="exampleModalLabel">Modal title</h1>
<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
</div>
<div class="modal-body">
...
</div>
<div class="modal-footer">
<button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
<button type="button" class="btn btn-primary">Save changes</button>
</div>
</div>
</div>
</div>
<!-- Statuspage widget -->
<script src="https://g9mp5m2251ps.statuspage.io/embed/script.js"></script>
<script>
// https://getbootstrap.com/docs/5.3/components/tooltips/#enable-tooltips
const tooltipTriggerList = document.querySelectorAll('[data-bs-toggle="tooltip"]');
const tooltipList = [...tooltipTriggerList].map(tooltipTriggerEl => new bootstrap.Tooltip(tooltipTriggerEl));
</script>
</body>
</html>
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