Demonstration of Installing Software on Debian/Ubuntu Systems Back to: LPI Linux Essentials Certification Course Previous Lesson Installing Packages and Software on Linux Lesson 15 within section The Linux Community and a Career in Open Source. You must enroll in this course to access course content. Next Lesson Demonstration of Installing Software on RedHat/Fedora Systems Lesson 17 within section The Linux Community and a Career in Open Source. You must enroll in this course to access course content.