http://www.fmi.uni-passau.de/archive/doc/unix/unixhelp/Unixhelp/concepts_kernel1.2.html (Einblicke ins Internet, ~06/1995)The following books provide a detailed technical description of the UNIX operating system. They are not intended for the general user.
Bach, M.J.
The Design of the UNIX Operating System
Prentice-Hall ISBN
The Design and Implementation of the 4.3BSD UNIX Opeating System
Addison Wesley ISBN 0-201-06196-1