A couple of days ago, a co-worker had to separate 50-100 PDF files according to a specific serial number that appeared on each one of them. He thought he had to go through all of them, however I just came to the rescue, and explained that he can accomplish the task in a much easier way.
So I thought that other people might have the same need, and although it is a trivial task, I decided to make a blog post about it.
Start Adobe Reader (I am using version 9.0 for the screenshots).
From the main menu, go to Edit -> Search.
On the search dialog that has just opened up, select the “All PDF Documents in” option.
Browse for the folder that contains the PDF files that have to be searched.
Adobe Reader is automatically looking in the selected folder’s subfolders for PDF files.
Type your search keywords, and check some of the extra options if required.
Simply click on the Search button and wait for the results.
Results are ordered by PDF file, and you can even go directly to the specific pages that contain the search terms.
If you are often dealing with multiple document files, text, PDF, Office files etc., it might be a good idea to take a look at Google Desktop. Google Desktop is going through all of your documents, and makes an index out of them. Thus at any time you can perform a full document search on your Desktop, and instantly get results back.