prevent googlebot from indexing file types in robots.txt and .htaccess

There are many Stack Overflow questions on how to prevent google bot from indexing, for instance, txt files. There's this:

robots.txt

User-agent: Googlebot Disallow: /*.txt$

.htaccess

<Files ~ "\.txt$">
     Header set X-Robots-Tag "noindex, nofollow"
</Files>

However, what is the syntax for both of these when trying to prevent two types of files from being indexed? In my case - txt and doc.

Solution

In your robots.txt file:

User-agent: Googlebot
Disallow: /*.txt$
Disallow: /*.doc$

More details at Google Webmasters: Create a robots.txt file

In your .htaccess file:

<FilesMatch "\.(txt|doc)$">
    Header set X-Robots-Tag "noindex, nofollow"
</FilesMatch>