To block a certain type of URLs on robots.txt, you can use the "Disallow" directive followed by the URL pattern you want to block. For example, if you want to block all URLs that contain "/admin" in them, you can add the following line to your robots.txt file: "Disallow: /admin".
In .htaccess file, you can use the "RewriteRule" directive to block certain types of URLs. For instance, if you want to block all URLs that contain "/private" in them, you can add the following line to your .htaccess file: "RewriteRule ^(.)/private(.)$ - [F,L]". This code will return a 403 Forbidden error when someone tries to access URLs with "/private" in them.
How to create separate robots.txt files for subdomains?
To create separate robots.txt files for subdomains, follow these steps:
- Create a separate robots.txt file for each subdomain on your website. For example, if you have a subdomain called "subdomain.example.com", create a robots.txt file specifically for that subdomain.
- Place each robots.txt file in the root directory of the corresponding subdomain. For example, if the root directory for the subdomain "subdomain.example.com" is located at "subdomain.example.com/robots.txt", place the robots.txt file there.
- Customize each robots.txt file to specify the directives for the specific subdomain. You can control which search engine crawlers are allowed to access the subdomain, specify the location of the sitemap file, and set other directives as needed.
- Verify that each robots.txt file is accessible to search engine crawlers by visiting the URL of each robots.txt file directly. You can do this by typing in the full URL (e.g., "http://subdomain.example.com/robots.txt") into a web browser.
- Test the robots.txt files using a tool like Google's robots.txt Tester or other online tools to ensure that the directives are correctly implemented for each subdomain.
By following these steps, you can create separate robots.txt files for each subdomain on your website to control the crawling and indexing behavior of search engine bots on a per-subdomain basis.
How to block specific user-agents in robots.txt?
To block specific user-agents in the robots.txt file, you can use the "User-agent" directive followed by the specific user-agent you want to block. Here's an example:
User-agent: BadBot Disallow: /
In this example, the robots.txt file is instructing the user-agent "BadBot" to not crawl any part of the website by using the "Disallow" directive with a forward slash ("/").
You can also block multiple user-agents by listing each one on a separate line with their own "User-agent" directive:
User-agent: BadBot Disallow: /
User-agent: AnotherBadBot Disallow: /
Remember to always test your robots.txt file using Google's Robots testing tool or a similar tool to ensure that it is properly blocking the specified user-agents.
What is the difference between allow and disallow directives in robots.txt?
The allow directive in a robots.txt file is used to specifically allow search engine crawlers to access and index certain parts of a website. On the other hand, the disallow directive is used to block search engine crawlers from accessing and indexing certain parts of a website.
In simpler terms, the allow directive tells search engines what they are allowed to access, while the disallow directive tells them what they are not allowed to access.