Hi - I've known about the wonders of ExifTool for a couple of years, but was too intimidated to try it from the command line. I'm ready to learn. I need to know the syntax both PC and Mac. I have data, which can be in a tab-delimited file, or an excel sheet. Many records; first field of each record is unique filename. I have many files (pdfs). I need to transfer data from log file to the pdf metadata (title, subject, keywords, created date) I know it's simple, but I don't understand the syntax. Can you please direct me to a sample command line, that relates to this process? If I get a shove in the right direction, I should be off and running. Thank you!