Yes Linux not eq. UNIX thanks. The type of UNIX is AXI, by Rocket, with an other identifier called UniVerse(brand).
Anyway it is UNIX , AXI. Then, the progammers come out with typical message to the bridge. The bridge will take the address of the print device bridge it to the server. So it being Serial , Parallel is not a great issue.
PS lets focus on the problem....make some intelligent assumptions.