This classic guide to Unix system administration combines theory with practical application to explore Solaris, HP-UX, Free BSD, and significant coverage of Linux. Professional insight from those in the field helps make this in-depth treatment an indispensable tutorial. Features - Updated information throughout; Provides students with a depth and breadth of material not found in other texts; Expanded coverage of Linux. Learn to administer Redhat Linux, the most widely used version of this open source operating system; Revised material on TCP/IP and DNS configuration; Provides a 'crash course' on routing. Detailed coverage of server maintenance. Demonstrates how to configure the kernel on HP-UX, Solaris, Redhat Linux and Berkeley Unix as well as how to configure and manage send-email.