The future of UNIX is... linux. Seriously, UNIX is a dying animal. Linux overtook operating systems of all kinds years ago and is far superior. UNIX will still exist somewhat running older legacy systems but I can't imagine it ever becoming dominant again in the server market.
Yes, quite a bit of companies and users use unix.
The true Unix source code is copyrighted; it doesn't exist anywhere specifically on the net. If you are interested in how something works in Unix you are better off looking at the Linux source code that accomplishes that task.
The TCP/IP protocol stack was first added to Berkeley Unix in 1981 (4.1a BSD); the official release (4.2BSD) was in August, 1983. The term "NOS" did not exist at the time.
yes it does still exist :)
Yes they still exist
yes, because we still exist
Yes, they still exist.
Yes, THEY STILL EXIST
It in UNIX the GUI is separate from the operating system itself. You can uninstall the GUI and still have a completely working UNIX system.
Yes, many aircraft still exist.
The Inca civilization no longer exists as an empire, but the descendants of the Inca people still live in Peru and other Andean regions. Their rich cultural heritage and traditions continue to be celebrated and preserved by indigenous communities in the Andes.