We are authoring a book on UNIX administration with full explanations on commands from the basic commands to the more advanced commands for users of Debian using Centos. We already have the topics. You will provide definition, explanation with example exercises and solutions of each topic. The topics range from "What is Unix to installing and configuring packages etc. These topics have to be original and include all modern linux or Unix commands using only COMMAND lines for users of Centos using virtual machines and these must not be copied or plagiarized from the Internet. For each topic, we require more than enough explanations and more than enough sample exercises as the book is mainly for hands-on users. We will pay for good un-plagiarized definitions of topics and exercises. Do not deceive us as we will know of any copied or plagiarized work. Only serious academic UNIX or Linux expert should bid on this project