Question
How to enable if modified since header on Ubuntu 14.04 server
Hi everyone,
I would like to know how can I enable the if modified since header on mu Ubuntu 14.04 server, I have checked via http://www.feedthebot.com/tools/if-modified/ and it clearly shows this feature is not enabled on my server.
The main reason I am curious to enable the feature is control the way search engines crawl my website.
Ankit Yadav
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