<FilesMatch ".doc$">
Header set X-Robots-Tag "noindex, noarchive, nosnippet"
</FilesMatch>
<FilesMatch ".(doc|pdf)$">
Header set X-Robots-Tag "noindex, noarchive, nosnippet"
</FilesMatch>
location ~* \.(doc|pdf)$ {
add_header X-Robots-Tag "noindex, noarchive, nosnippet";
}
<FilesMatch "robots.txt">
Header set X-Robots-Tag "noindex"
</FilesMatch>
location = robots.txt {
add_header X-Robots-Tag "noindex";
}