gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=out.pdf source1.pdf source2.pdf source3.pdf
Source:http://hints.macworld.com/article.php?story=2003083122212228.
A repository of notes; by noto, for noto. Made public so noto can read it from anywhere. It won't make any sense to you.
gs -q -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=out.pdf source1.pdf source2.pdf source3.pdf