Everything. I'm trying to grok how long Linux as a whole was in active development. That includes all the GNU utilities, GCC, everything. Just like a "regular" corporate development environment would have devoted to the cause :) On 3/14/2017 11:57 AM, Michael Kjörling wrote: > 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)? >