Searching for keywords in pdf files

As a lot of researchers, I have hundreds of articles in pdf format in my digital library. I also don’t have the tools (not free) to research for specific keywords in those files. So I created a small sh script that scan the directory, translate the pdf files into txt files (if the pdf are not protected and allows a basic search (using egrep) on the txt files. It’s basic but works fine. Here is the code:

search_pdf_create_txt.txt

I had to use txt extension but rename it in sh – also change the first line according to your own shell.