Calibre+DeDrm on Linux

It makes for a interesting topic, no matter where you stay in the matter of Copyright and Right to Use. I found a good coverage on michaelharley.net. It covers Linux, so if anyone happens to experiment about making their book device-agnostic, it may give it a read.
BE VERY sure to avoid infringing international and local laws. Inform yourself first
As Calibre plugins always pose a security risk, anyone interest might consider running any experiment in a dedicated VM (I believe that Virtualbox or Vmware player may suffice).