R: The Allsome Research Tool You did not know you had.

Do a word search in all your PDF files at once without having to even open them!

Adobe Reader
With the advanced search, you can search all PDF files in a directory and it’s sub-directories in a single go. By default, if you open Adobe Reader and press CTRL + F, you’ll get the normal search box. It is located at the top right.
>>To use the advanced PDF search option, you can choose Advanced Search from the Edit drop down menu or press SHIFT + CTRL + F.
Go ahead and enter the phrase you are searching for in the search box. Next choose the All PDF Documents In option under Where would you like to search heading.<<


 http://www.online-techtips.com/computer-tips/how-to-search-for-text-inside-multiple-pdf-files-at-once/



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