332 lines
7.7 KiB
Markdown
332 lines
7.7 KiB
Markdown
---
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title: Permalinks
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permalink: /docs/permalinks/
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---
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Permalinks are the output path for your pages, posts, or collections. They
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allow you to structure the directories of your source code different from the
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directories in your output.
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## Front Matter
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The simplest way to set a permalink is using front matter. You set the
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`permalink` variable in front matter to the output path you'd like.
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For example, you might have a page on your site located at
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`/my_pages/about-me.html` and you want the output url to be `/about/`. In
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front matter of the page you would set:
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```
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---
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permalink: /about/
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---
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```
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## Global
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Setting a permalink in front matter for every page on your site is no fun.
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Luckily, Jekyll let's you set in globally in your `_config.yml`.
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To set a global permalink, you use the `permalink` variable in `_config.yml`.
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You can use placeholders to your desired output. For example:
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```yaml
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permalink: /:categories/:year/:month/:day/:title:output_ext
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```
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Note that pages and collections don't have time or categories, these aspects of
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the permalink style are ignored for the output.
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For example, a permalink style of
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`/:categories/:year/:month/:day/:title:output_ext` for posts becomes
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`/:title.html` for pages and collections.
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### Placeholders
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Here's the full list of placeholders available:
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<div class="mobile-side-scroller">
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<table>
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<thead>
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<tr>
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<th>Variable</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<p><code>year</code></p>
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</td>
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<td>
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<p>
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Year from the post's filename. May be overridden via the document’s
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<code>date</code> front matter
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>month</code></p>
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</td>
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<td>
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<p>
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Month from the post's filename. May be overridden via the document’s
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<code>date</code> front matter
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>i_month</code></p>
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</td>
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<td>
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<p>
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Month without leading zeros from the post's filename. May be
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overridden via the document’s <code>date</code> front matter
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>day</code></p>
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</td>
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<td>
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<p>
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Day from the post's filename. May be overridden via the document’s
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<code>date</code> front matter
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>i_day</code></p>
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</td>
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<td>
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<p>
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Day without leading zeros from the post's filename. May be overridden
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via the document’s <code>date</code> front matter
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>y_day</code></p>
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</td>
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<td>
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<p>Day of the year from the post's filename, with leading zeros.</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>short_year</code></p>
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</td>
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<td>
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<p>
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Year without the century from the post's filename. May be overridden
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via the document’s <code>date</code> front matter
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>hour</code></p>
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</td>
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<td>
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<p>
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Hour of the day, 24-hour clock, zero-padded from the post's
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<code>date</code> front matter. (00..23)
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>minute</code></p>
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</td>
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<td>
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<p>
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Minute of the hour from the post's <code>date</code> front matter. (00..59)
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>second</code></p>
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</td>
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<td>
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<p>
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Second of the minute from the post's <code>date</code> front matter. (00..59)
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>title</code></p>
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</td>
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<td>
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<p>
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Title from the document’s filename. May be overridden via
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the document’s <code>slug</code> front matter.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>slug</code></p>
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</td>
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<td>
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<p>
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Slugified title from the document’s filename (any character
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except numbers and letters is replaced as hyphen). May be
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overridden via the document’s <code>slug</code> front matter.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>categories</code></p>
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</td>
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<td>
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<p>
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The specified categories for this post. If a post has multiple
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categories, Jekyll will create a hierarchy (e.g. <code>/category1/category2</code>).
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Also Jekyll automatically parses out double slashes in the URLs,
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so if no categories are present, it will ignore this.
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</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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### Built-in formats
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For posts, Jekyll also provides the following built-in styles for convenience:
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<div class="mobile-side-scroller">
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<table>
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<thead>
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<tr>
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<th>Permalink Style</th>
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<th>URL Template</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<p><code>date</code></p>
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</td>
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<td>
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<p><code>/:categories/:year/:month/:day/:title:output_ext</code></p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>pretty</code></p>
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</td>
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<td>
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<p><code>/:categories/:year/:month/:day/:title/</code></p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>ordinal</code></p>
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</td>
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<td>
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<p><code>/:categories/:year/:y_day/:title:output_ext</code></p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>none</code></p>
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</td>
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<td>
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<p><code>/:categories/:title:output_ext</code></p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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Rather than typing `permalink: /:categories/:year/:month/:day/:title/`, you can just type `permalink: pretty`.
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<div class="note info">
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<h5>Specifying permalinks through the front matter</h5>
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<p>Built-in permalink styles are not recognized in front matter. As a result, <code>permalink: pretty</code> will not work.</p>
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</div>
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### Collections
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For collections, you have the option to override the global permalink in the
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collection configuration in `_config.yml`:
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```yaml
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collections:
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my_collection:
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output: true
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permalink: /:collection/:name
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```
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Collections have the following placeholders available:
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<div class="mobile-side-scroller">
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<table>
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<thead>
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<tr>
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<th>Variable</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>
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<p><code>:collection</code></p>
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</td>
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<td>
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<p>Label of the containing collection.</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>:path</code></p>
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</td>
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<td>
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<p>Path to the document relative to the collection's directory.</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>:name</code></p>
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</td>
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<td>
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<p>The document's base filename, with every sequence of spaces
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and non-alphanumeric characters replaced by a hyphen.</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>:title</code></p>
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</td>
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<td>
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<p>
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The <code>:title</code> template variable will take the
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<code>slug</code> <a href="/docs/front-matter/">front matter</a>
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variable value if any is present in the document; if none is
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defined then <code>:title</code> will be equivalent to
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<code>:name</code>, aka the slug generated from the filename.
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p><code>:output_ext</code></p>
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</td>
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<td>
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<p>Extension of the output file. (Included by default and usually unnecessary.)</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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