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In just 21 days, users can go to beginner or intermediate to the capability level of performing more advanced system administrator functions. The book covers th

Learn how to develop powerful and robust shell scripts in order to get the most out of your Unix/Linux system.

Sams Teach Yourself SQL in 21 Days, Fourth Editionprovides a sold foundation in understanding the fundamentals of SQL (Structured Query Language). SQL is the qu

In the wake of the highly successful Sams Teach Yourself Unix in 24 Hours, this book focuses on the additional Unix commands that an advanced user or beginning

Ruby is a high-level, fully object-oriented programming (OOP) language. It is very powerful and relatively easy to learn, read, and maintain. Sams Teach Yoursel