Merging PDF files

This was something I used hit a dead end on quite often.
Now that I found it, I'm posting it here..

It's basically ghostscript to the rescue

gs -q -sPAPERSIZE=letter -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=out.pdf in1.pdf in2.pdf in3.pdf ...

Source (yeah, I'm "plagiarizing" !! )
http://ansuz.sooke.bc.ca/software/pdf-append.php

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