Linux bible 2011 edition Christopher Negus.

by Negus
Published 2011

Linux administration : a beginner's guide Wale Soyinka.

by Soyinka
Published 2009

The accidental administrator : linux server step-by-step configuration guide Don R. Crawley.

by Crawley
Published 2010

Linux firewalls : attack detection and response with iptables, psad and fwsnort Michael Rash.

by Rash
Published 2009

Illustrated Dr. DOS 6.0 Russell A. Stultz.

by Stultz
Published 1992