LAHORE: The third edition of one of the bestselling textbooks on UNIX has been published in the US with Prof Dr Syed Mansoor Sarwar, principal of the Punjab University College of IT (PUCIT) as the first author. One of world’s top publishers, CRC Press/Taylor & Francis, Florida, US has published the updated and expanded revision of UNIX: The Textbook by Prof Dr Syed Mansoor Sarwar. This is his fifth book published in the US. The first two editions of this book, Linux: The Textbook, and UNIX and Linux Programming Tools were published by Addison-Wesley, a subsidiary of Pearson Education, Boston, US, the top publisher in the world. Sarwar’s books have been used as textbooks in over 200 American colleges and universities, including University of Texas at Austin, University of North Carolina at Chapel Hill, Syracuse University, University of Arizona, Stevens Tech, and University of California at Santa Barbara. His books are also being taught in several other countries, including Canada, UK, and Australia. Prof Jose Rafael Garcia Bermejo of Universidad de Salamanca and Cesar Llamas Bello at Universidad de Valladolid translated the UNIX: The Textbook and Linux: The Textbook into the Spanish language. Addison-Wesley also published these translations. Prof Sarwar’s books have also been translated into the Chinese language. These translations are being used in many academic institutions in China, Hong Kong, Spain and Mexico. More than 50,000 copies of his books have been sold throughout the world. UNIX operating system was developed in 1969 at Bell Labs, US and Linux was developed in 1991 at the University of Helsinki, Finland. These operating systems are critical for the operation of the Internet because most of the servers run on computers that use UNIX and Linux. Prof Sarwar is the only resident Pakistani academic whose textbooks have been published in the US by world’s top publishers. All of his books are available on Amazon.com. Dr Sarwar has an illustrious academic career. He earned his MS and PhD degrees in computer engineering from Iowa State University after completing his BSc degree in electrical engineering from the UET Lahore. He was a tenured associate professor at the University of Portland, where he worked for over 11 years before joining LUMS as a professor in 2001. He later served LUMS as the head of computer science and engineering department.