Unix communications / Bart Anderson, Bryan Costales and Harry Henderson
The Unix operation system / Kaare Christian, Susan Richter
Peter Norton o guia do Unix / Peter Norton, Harley Hahn
Sendmail / Bryan Costales, Eric Allman
Unix for oracle DBAs : pocket reference / Donald K. Burleson
Special OPS : host and network security for microsoft, UNIX, and Oracle / Erik Pace Birkholz