This course is an introduction to UNIX-derived open-source operating systems. Students explore the history and development trends in open-source OS. The course covers the file system, user commands and utilities, graphical user interfaces, editors, manual pages, and shells. Prerequisite: CST-135 or CST-239.  Please contact Assignment Samurai for help with CST-221 Operating Systems Concepts or any other course. Email: assignmentsamurai@gmail.com.