command-line way to combine PDFs?
Every day, I have a new directory of PDF files which need to be combined into a single multi-page pdf document for that day. At 4am. Unfortunately, every instruction I can find for combining files starts out with "click on the files... drag... drop..." but I don't want to have to get up at 4am to click and move!
Is there a command-line command which I can put into a perl script that will do the combining?