Linux All-in-One For Dummies (a $25.99 value) FREE!

Eight minibooks in one volume cover every important aspect of Linux and everything you need to know to pass level-1 certification.Linux All-in-One For Dummies explains everything you need to get up and running with the popular Linux operating system. Written in the friendly and accessible For Dummies style, the book ideal for new and intermediate Linux users, as well as anyone studying for level-1 Linux certification. The eight minibooks inside cover the basics of Linux, interacting with it, networking issues, Internet services, administration, security, scripting, and level-1 certification.
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10 Easy Ways to Restore Your Linux System

Reverting your operating system to a previous state without consequences sounds almost like magic. You can quickly return to your work as if nothing happened, even when you don’t know what caused the problem. That’s why the System Restore feature is among the top things ex-Windows users want from Linux.
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Install Ganglia on Ubuntu 16.04 Server (Xenial Xerus)

Ganglia is a scalable distributed monitoring system for high-performance computing systems such as clusters and Grids. It is based on a hierarchical design targeted at federations of clusters. It leverages widely used technologies such as XML for data representation, XDR for compact, portable data transport, and RRDtool for data storage and visualization. It uses carefully engineered data structures and algorithms to achieve very low per-node overheads and high concurrency. The implementation is robust, has been ported to an extensive set of operating systems and processor architectures, and is currently in use on thousands of clusters around the world. It has been used to link clusters across university campuses and around the world and can scale to handle clusters with 2000 nodes.
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