Joining multiple PDFs together on Linux

A quick and easy way to join or merge multiple PDFs together on Linux (Kubuntu 14.10):

This doesn't resample pages or any other nonsense like that either :) pdfunite is provided by the poppler-utils package which should already be installed.

If you want to do the opposite, i.e. split a unified PDF file into multiple ones, poppler-utils also provides the aptly named pdfseparate.

Hope this helps :)