I have several hundred pdf files now. I wanted to be able to search them.
I just found this information on the web that allows pdf searches for words and phrases.
http://www.makeuseof.com/tag/search-text-multiple-pdf-files-pdf-viewers-advanced-search/Most people will already have at least one of these tools on their computer.
If not they are free from
downloads.CNET.com
which is a safe source for downloading.
This may be useful for some folks.