I am working on a UNIX system and I'd like to merge thousands of PDF files into one file in order to print it. I don't know how many pages they are in advance.
I'd like to print it double sided, such that two files will not be on the same page.
Therefore it I'd the merging file to be aligned such that every file will begin in odd page and a blank page will be added if the next place to write is an even page.
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