In case someone with a similar situation finds this page -- here's how to run
a script:
1. Open the terminal, and type:
cd [directory where your script is]
Example:
cd /home/username/Desktop/research/
Put the PDF files in the same directory
2. Then type the following, to give yourself permission to run the script
(is that what it does?)
chmod +x [script name]
3. Run the script
./[script name]
4. For Magic Bananna's script -- the terminal will tell you to use the script
this way:
./[script name] [pdf-name].pdf [pdf-name].pdf
OR you can do all the PDFs in that folder in one go with an asterix, like
this:
./[script name] *.pdf