check for redirect orphans (#23330)

* check for redirect orphans

Part of #1303

* timeout

* avoid external redirects in redirects_from too

* delete content/admin/advanced-security/viewing-your-github-advanced-security-usage.md

* remove from children: too

* remove some trailing slashes in redirect_froms

* fix a few more trailing slash redirects

* delete orphan pages

Author: peterbe

content/admin/advanced-security/index.md

@@ -15,8 +15,6 @@ children:
   - /enabling-github-advanced-security-for-your-enterprise
   - /configuring-code-scanning-for-your-appliance
   - /configuring-secret-scanning-for-your-appliance
-  - /viewing-your-github-advanced-security-usage
   - /overview-of-github-advanced-security-deployment
   - /deploying-github-advanced-security-in-your-enterprise
 ---
-

content/admin/advanced-security/viewing-your-github-advanced-security-usage.md

@@ -2,8 +2,8 @@
 title: Managing disruptive comments
 intro: 'You can {% ifversion fpt or ghec %}hide, edit,{% else %}edit{% endif %} or delete comments on issues, pull requests, and commits.'
 redirect_from:
-  - /articles/editing-a-comment/
-  - /articles/deleting-a-comment/
+  - /articles/editing-a-comment
+  - /articles/deleting-a-comment
   - /articles/managing-disruptive-comments
   - /github/building-a-strong-community/managing-disruptive-comments
 versions:
@@ -18,7 +18,7 @@ shortTitle: Manage comments
 
 ## Hiding a comment
 
-Anyone with write access to a repository can hide comments on issues, pull requests, and commits. 
+Anyone with write access to a repository can hide comments on issues, pull requests, and commits.
 
 If a comment is off-topic, outdated, or resolved, you may want to hide a comment to keep a discussion focused or make a pull request easier to navigate and review. Hidden comments are minimized but people with read access to the repository can expand them.
 

content/communities/moderating-comments-and-conversations/managing-disruptive-comments.md

@@ -2,7 +2,7 @@
 title: Keyboard shortcuts
 intro: 'You can use keyboard shortcuts in {% data variables.product.prodname_desktop %}.'
 redirect_from:
-  - /desktop/getting-started-with-github-desktop/keyboard-shortcuts-in-github-desktop/
+  - /desktop/getting-started-with-github-desktop/keyboard-shortcuts-in-github-desktop
   - /desktop/getting-started-with-github-desktop/keyboard-shortcuts
   - /desktop/installing-and-configuring-github-desktop/keyboard-shortcuts
 versions:

content/desktop/installing-and-configuring-github-desktop/overview/keyboard-shortcuts.md

@@ -2,10 +2,10 @@
 title: Receiving payment for app purchases
 intro: 'At the end of each month, you''ll receive payment for your {% data variables.product.prodname_marketplace %} listing.'
 redirect_from:
-  - /apps/adding-integrations/managing-pricing-and-payments-for-a-github-marketplace-listing/receiving-payment-for-a-github-marketplace-listing/
-  - /apps/marketplace/managing-pricing-and-payments-for-a-github-marketplace-listing/receiving-payment-for-a-github-marketplace-listing/
-  - /apps/marketplace/pricing-payments-and-free-trials/receiving-payment-for-a-github-marketplace-listing/
-  - /apps/marketplace/selling-your-app/receiving-payment-for-github-marketplace-listings/
+  - /apps/adding-integrations/managing-pricing-and-payments-for-a-github-marketplace-listing/receiving-payment-for-a-github-marketplace-listing
+  - /apps/marketplace/managing-pricing-and-payments-for-a-github-marketplace-listing/receiving-payment-for-a-github-marketplace-listing
+  - /apps/marketplace/pricing-payments-and-free-trials/receiving-payment-for-a-github-marketplace-listing
+  - /apps/marketplace/selling-your-app/receiving-payment-for-github-marketplace-listings
   - /marketplace/selling-your-app/receiving-payment-for-github-marketplace-listings
   - /developers/github-marketplace/receiving-payment-for-app-purchases
 versions:

content/developers/github-marketplace/selling-your-app-on-github-marketplace/receiving-payment-for-app-purchases.md

@@ -4,7 +4,7 @@ intro: 'Review common reasons that applications for the {% data variables.produc
 redirect_from:
   - /education/teach-and-learn-with-github-education/why-wasnt-my-application-for-a-student-developer-pack-approved
   - /github/teaching-and-learning-with-github-education/why-wasnt-my-application-for-a-student-developer-pack-approved
-  - /articles/why-was-my-application-for-a-student-developer-pack-denied/
+  - /articles/why-was-my-application-for-a-student-developer-pack-denied
   - /articles/why-wasn-t-my-application-for-a-student-developer-pack-approved
   - /articles/why-wasnt-my-application-for-a-student-developer-pack-approved
   - /education/explore-the-benefits-of-teaching-and-learning-with-github-education/why-wasnt-my-application-for-a-student-developer-pack-approved

content/education/explore-the-benefits-of-teaching-and-learning-with-github-education/use-github-for-your-schoolwork/why-wasnt-my-application-for-a-student-developer-pack-approved.md

@@ -4,10 +4,10 @@ intro: 'If you''re an educator or a researcher, you can apply to receive {% data
 redirect_from:
   - /education/teach-and-learn-with-github-education/apply-for-an-educator-or-researcher-discount
   - /github/teaching-and-learning-with-github-education/applying-for-an-educator-or-researcher-discount
-  - /articles/applying-for-a-classroom-discount/
-  - /articles/applying-for-a-discount-for-your-school-club/
-  - /articles/applying-for-an-academic-research-discount/
-  - /articles/applying-for-a-discount-for-your-first-robotics-team/
+  - /articles/applying-for-a-classroom-discount
+  - /articles/applying-for-a-discount-for-your-school-club
+  - /articles/applying-for-an-academic-research-discount
+  - /articles/applying-for-a-discount-for-your-first-robotics-team
   - /articles/applying-for-an-educator-or-researcher-discount
   - /education/explore-the-benefits-of-teaching-and-learning-with-github-education/apply-for-an-educator-or-researcher-discount
 versions:

content/education/explore-the-benefits-of-teaching-and-learning-with-github-education/use-github-in-your-classroom-and-research/apply-for-an-educator-or-researcher-discount.md

@@ -4,7 +4,7 @@ intro: Review common reasons that applications for an educator or researcher dis
 redirect_from:
   - /education/teach-and-learn-with-github-education/why-wasnt-my-application-for-an-educator-or-researcher-discount-approved
   - /github/teaching-and-learning-with-github-education/why-wasnt-my-application-for-an-educator-or-researcher-discount-approved
-  - /articles/why-was-my-application-for-an-educator-or-researcher-discount-denied/
+  - /articles/why-was-my-application-for-an-educator-or-researcher-discount-denied
   - /articles/why-wasn-t-my-application-for-an-educator-or-researcher-discount-approved
   - /articles/why-wasnt-my-application-for-an-educator-or-researcher-discount-approved
   - /education/explore-the-benefits-of-teaching-and-learning-with-github-education/why-wasnt-my-application-for-an-educator-or-researcher-discount-approved

content/education/explore-the-benefits-of-teaching-and-learning-with-github-education/use-github-in-your-classroom-and-research/why-wasnt-my-application-for-an-educator-or-researcher-discount-approved.md

@@ -2,9 +2,9 @@
 title: About custom domains and GitHub Pages
 intro: '{% data variables.product.prodname_pages %} supports using custom domains, or changing the root of your site''s URL from the default, like `octocat.github.io`, to any domain you own.'
 redirect_from:
-  - /articles/about-custom-domains-for-github-pages-sites/
-  - /articles/about-supported-custom-domains/
-  - /articles/custom-domain-redirects-for-your-github-pages-site/
+  - /articles/about-custom-domains-for-github-pages-sites
+  - /articles/about-supported-custom-domains
+  - /articles/custom-domain-redirects-for-your-github-pages-site
   - /articles/about-custom-domains-and-github-pages
   - /github/working-with-github-pages/about-custom-domains-and-github-pages
 product: '{% data reusables.gated-features.pages %}'
@@ -58,7 +58,7 @@ An apex domain is configured with an `A`, `ALIAS`, or `ANAME` record through you
 
 ## Securing the custom domain for your {% data variables.product.prodname_pages %} site
 
-{% data reusables.pages.secure-your-domain %} For more information, see "[Verifying your custom domain for {% data variables.product.prodname_pages %}](/pages/configuring-a-custom-domain-for-your-github-pages-site/verifying-your-custom-domain-for-github-pages)" and "[Managing a custom domain for your {% data variables.product.prodname_pages %} site](/articles/managing-a-custom-domain-for-your-github-pages-site)."  
+{% data reusables.pages.secure-your-domain %} For more information, see "[Verifying your custom domain for {% data variables.product.prodname_pages %}](/pages/configuring-a-custom-domain-for-your-github-pages-site/verifying-your-custom-domain-for-github-pages)" and "[Managing a custom domain for your {% data variables.product.prodname_pages %} site](/articles/managing-a-custom-domain-for-your-github-pages-site)."
 
 There are a couple of reasons your site might be automatically disabled.
 

content/pages/configuring-a-custom-domain-for-your-github-pages-site/about-custom-domains-and-github-pages.md

@@ -2,13 +2,13 @@
 title: Configuring a custom domain for your GitHub Pages site
 intro: 'You can customize the domain name of your {% data variables.product.prodname_pages %} site.'
 redirect_from:
-  - /articles/tips-for-configuring-an-a-record-with-your-dns-provider/
-  - /articles/adding-or-removing-a-custom-domain-for-your-github-pages-site/
-  - /articles/configuring-an-a-record-with-your-dns-provider/
-  - /articles/using-a-custom-domain-with-github-pages/
-  - /articles/tips-for-configuring-a-cname-record/
-  - /articles/setting-up-a-custom-domain-with-pages/
-  - /articles/setting-up-a-custom-domain-with-github-pages/
+  - /articles/tips-for-configuring-an-a-record-with-your-dns-provider
+  - /articles/adding-or-removing-a-custom-domain-for-your-github-pages-site
+  - /articles/configuring-an-a-record-with-your-dns-provider
+  - /articles/using-a-custom-domain-with-github-pages
+  - /articles/tips-for-configuring-a-cname-record
+  - /articles/setting-up-a-custom-domain-with-pages
+  - /articles/setting-up-a-custom-domain-with-github-pages
   - /articles/configuring-a-custom-domain-for-your-github-pages-site
   - /github/working-with-github-pages/configuring-a-custom-domain-for-your-github-pages-site
 product: '{% data reusables.gated-features.pages %}'
@@ -24,4 +24,3 @@ children:
   - /troubleshooting-custom-domains-and-github-pages
 shortTitle: Configure a custom domain
 ---
-

content/pages/configuring-a-custom-domain-for-your-github-pages-site/index.md

@@ -2,13 +2,13 @@
 title: Managing a custom domain for your GitHub Pages site
 intro: 'You can set up or update certain DNS records and your repository settings to point the default domain for your {% data variables.product.prodname_pages %} site to a custom domain.'
 redirect_from:
-  - /articles/quick-start-setting-up-a-custom-domain/
-  - /articles/setting-up-an-apex-domain/
-  - /articles/setting-up-a-www-subdomain/
-  - /articles/setting-up-a-custom-domain/
-  - /articles/setting-up-an-apex-domain-and-www-subdomain/
-  - /articles/adding-a-cname-file-to-your-repository/
-  - /articles/setting-up-your-pages-site-repository/
+  - /articles/quick-start-setting-up-a-custom-domain
+  - /articles/setting-up-an-apex-domain
+  - /articles/setting-up-a-www-subdomain
+  - /articles/setting-up-a-custom-domain
+  - /articles/setting-up-an-apex-domain-and-www-subdomain
+  - /articles/adding-a-cname-file-to-your-repository
+  - /articles/setting-up-your-pages-site-repository
   - /articles/managing-a-custom-domain-for-your-github-pages-site
   - /github/working-with-github-pages/managing-a-custom-domain-for-your-github-pages-site
 product: '{% data reusables.gated-features.pages %}'
@@ -139,7 +139,7 @@ After you configure the apex domain, you must configure a CNAME record with your
 
 ## Securing your custom domain
 
-{% data reusables.pages.secure-your-domain %} For more information, see "[Verifying your custom domain for {% data variables.product.prodname_pages %}](/pages/configuring-a-custom-domain-for-your-github-pages-site/verifying-your-custom-domain-for-github-pages)."  
+{% data reusables.pages.secure-your-domain %} For more information, see "[Verifying your custom domain for {% data variables.product.prodname_pages %}](/pages/configuring-a-custom-domain-for-your-github-pages-site/verifying-your-custom-domain-for-github-pages)."
 
 ## Further reading
 

content/pages/configuring-a-custom-domain-for-your-github-pages-site/managing-a-custom-domain-for-your-github-pages-site.md

@@ -2,9 +2,9 @@
 title: Troubleshooting custom domains and GitHub Pages
 intro: 'You can check for common errors to resolve issues with custom domains or HTTPS for your {% data variables.product.prodname_pages %} site.'
 redirect_from:
-  - /articles/my-custom-domain-isn-t-working/
-  - /articles/custom-domain-isn-t-working/
-  - /articles/troubleshooting-custom-domains/
+  - /articles/my-custom-domain-isn-t-working
+  - /articles/custom-domain-isn-t-working
+  - /articles/troubleshooting-custom-domains
   - /articles/troubleshooting-custom-domains-and-github-pages
   - /github/working-with-github-pages/troubleshooting-custom-domains-and-github-pages
 product: '{% data reusables.gated-features.pages %}'

content/pages/configuring-a-custom-domain-for-your-github-pages-site/troubleshooting-custom-domains-and-github-pages.md

@@ -3,12 +3,11 @@ title: GitHub Pages Documentation
 shortTitle: GitHub Pages
 intro: 'You can create a website directly from a repository on {% ifversion ghae %}{% data variables.product.product_name %}{% else %}{% data variables.product.product_location %}{% endif %}.'
 redirect_from:
-  - /categories/20/articles/
-  - /categories/95/articles/
-  - /categories/github-pages-features/
-  - /pages/
-  - /categories/96/articles/
-  - /categories/github-pages-troubleshooting/
+  - /categories/20/articles
+  - /categories/95/articles
+  - /categories/github-pages-features
+  - /categories/96/articles
+  - /categories/github-pages-troubleshooting
   - /categories/working-with-github-pages
   - /github/working-with-github-pages
 product: '{% data reusables.gated-features.pages %}'
@@ -25,4 +24,3 @@ children:
   - /setting-up-a-github-pages-site-with-jekyll
   - /configuring-a-custom-domain-for-your-github-pages-site
 ---
-

content/pages/index.md

@@ -2,8 +2,8 @@
 title: About Jekyll build errors for GitHub Pages sites
 intro: 'If Jekyll encounters an error building your {% data variables.product.prodname_pages %} site locally or on {% data variables.product.product_name %}, you''ll receive an error message with more information.'
 redirect_from:
-  - /articles/viewing-jekyll-build-error-messages/
-  - /articles/generic-jekyll-build-failures/
+  - /articles/viewing-jekyll-build-error-messages
+  - /articles/generic-jekyll-build-failures
   - /articles/about-jekyll-build-errors-for-github-pages-sites
   - /github/working-with-github-pages/about-jekyll-build-errors-for-github-pages-sites
 product: '{% data reusables.gated-features.pages %}'

content/pages/setting-up-a-github-pages-site-with-jekyll/about-jekyll-build-errors-for-github-pages-sites.md

@@ -2,8 +2,8 @@
 title: Adding a theme to your GitHub Pages site using Jekyll
 intro: You can personalize your Jekyll site by adding and customizing a theme.
 redirect_from:
-  - /articles/customizing-css-and-html-in-your-jekyll-theme/
-  - /articles/adding-a-jekyll-theme-to-your-github-pages-site/
+  - /articles/customizing-css-and-html-in-your-jekyll-theme
+  - /articles/adding-a-jekyll-theme-to-your-github-pages-site
   - /articles/adding-a-theme-to-your-github-pages-site-using-jekyll
   - /github/working-with-github-pages/adding-a-theme-to-your-github-pages-site-using-jekyll
 product: '{% data reusables.gated-features.pages %}'
@@ -27,7 +27,7 @@ People with write permissions for a repository can add a theme to a {% data vari
 {% data reusables.pages.navigate-publishing-source %}
 2. Navigate to *_config.yml*.
 {% data reusables.repositories.edit-file %}
-4. Add a new line to the file for the theme name. 
+4. Add a new line to the file for the theme name.
    - To use a supported theme, type `theme: THEME-NAME`, replacing _THEME-NAME_ with the name of the theme as shown in the README of the theme's repository. For a list of supported themes, see "[Supported themes](https://pages.github.com/themes/)" on the {% data variables.product.prodname_pages %} site.
    ![Supported theme in config file](/assets/images/help/pages/add-theme-to-config-file.png)
    - To use any other Jekyll theme hosted on {% data variables.product.prodname_dotcom %}, type `remote_theme: THEME-NAME`, replacing THEME-NAME with the name of the theme as shown in the README of the theme's repository.

content/pages/setting-up-a-github-pages-site-with-jekyll/adding-a-theme-to-your-github-pages-site-using-jekyll.md

@@ -2,8 +2,8 @@
 title: Setting a Markdown processor for your GitHub Pages site using Jekyll
 intro: 'You can choose a Markdown processor to determine how Markdown is rendered on your {% data variables.product.prodname_pages %} site.'
 redirect_from:
-  - /articles/migrating-your-pages-site-from-maruku/
-  - /articles/updating-your-markdown-processor-to-kramdown/
+  - /articles/migrating-your-pages-site-from-maruku
+  - /articles/updating-your-markdown-processor-to-kramdown
   - /articles/setting-a-markdown-processor-for-your-github-pages-site-using-jekyll
   - /github/working-with-github-pages/setting-a-markdown-processor-for-your-github-pages-site-using-jekyll
 product: '{% data reusables.gated-features.pages %}'