Introduction to Network Operating System

While most books focus on a specific operating system such as Windows XP, this one provides an introductory overview to each of the mainstream operating systems an administrator is likely to encounter. It discusses how to use the basic commands and tools built into these operating systems to manage users/groups, protect file systems, and perform maintenance and troubleshooting. Also covered are the mechanisms available to secure servers and the basic principles for protecting information systems against hackers, viruses and malware.