Unix and Linux;

With Unix, 4th Edition: Visual QuickStart Guide, readers can start from the beginning to get a tour of the Unix operating system, or look up specific tasks to learn just what they need to know. This task-based, visual reference guide uses step-by-step instructions and plenty of screenshots, and includes three years worth of new material based on the latest Unix developments. This reference guide details all Unix commands and options along with tips that put those commands in context. Leading Unix authorities Deborah S. Ray and Eric J. Ray leverage their expertise as technical writers and working in the industry (Sun Microsystems) as they take readers step-by-step through the most common Unix commands and options.