What I find fascinating (and that no-one has mentioned yet) is how anyone
can claim that Unix internals are still trade secret, especially given
this book:
The Design of the UNIX Operating System,
Maurice J. Bach.
Prentice-Hall, Englewood Cliffs, NJ, USA, 1986.
ISBN 0-13-201799-7.
There's also these:
The Magic Garden Explained:
The Internals of Unix System V Release 4:
An Open Systems Design,
Berny Goodheart, James Cox, John R. Mashey.
Prentice-Hall, Englewood Cliffs, NJ, USA, 1994.
ISBN 0-13-098138-9.
Unix Internals: The New Frontiers,
Uresh Vahalia.
Prentice-Hall, Englewood Cliffs, NJ, USA, 1996.
ISBN 0-13-101908-2.
According to
Amazon.com, a new edition is scheduled for 2005.
The Bach book, in particular, is a rather large smoking gun that AT&T
didn't care a huge amount about trade secrets. The book is still in
print (and selling for a whopping $69.97 on
Amazon.com!) It doesn't
contain actual source code, but let's get real here...
Arnold