Taking a system snapshot

In Unix there are many ways to accomplish a given task. Given a problem to solve, we may be able to get to a solution in any number of ways. Of course, some will be more efficient, be more readable, use less disk space or memory, may or may not give the user feedback on what is going on or give more accurate details and more precision to the result. In this book we are going to step through every detail of writing a shell script to solve real-world Unix problems and tasks. The shell scripts range from using a pseudorandom number generator to create pseudo-random...

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Xen, the open source virtualization tool, is a system administrator's dream. Xen is a free, high-performance virtual machine monitor that lets you consolidate your hardware and finally put those unused cycles to use—without sacrificing reliability, performance, or scalability. The Book of Xen explains everything you need to know in order to use Xen effectively, including installation, networking, memory management, and virtualized storage.

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