How to noindex all pages to keep them out of Google indexes

I haven’t done much theme work, so this is exactly what I needed to know. Thanks! And it’s showing up in the head correctly (added to “head_tag”). For the record, the Google recommended tag if you want to ask all robots not to index, is:

<meta name="robots" content="noindex">

I’ve now disabled (well, actually commented out) robots.txt completely for the reasons noted earlier in this thread. Thanks again.