On 14 Mar 2017 11:51 -0400, from krewat at kilonet.net (Arthur Krewat):
> in reality, how much of Linux was based on previous works?

Linux the kernel, or Linux the usable operating system (which would
include at least the essential userspace parts)?

-- 
Michael Kjörling • https://michael.kjorling.se • michael at kjorling.se
                 “People who think they know everything really annoy
                 those of us who know we don’t.” (Bjarne Stroustrup)