Which operating system would allow a user to add functionality and sell or give away their versions?

Which operating system would allow a user to add functionality and sell or give away their versions?

• A. Windows
• B. MacOS
• C. Android
• D. Linux

Answer: (D)

Open-source licenses let you study, modify, and share software, and Linux embodies this model. Because Linux is distributed with permissive licenses, you can build on the existing code, add new functionality, and freely distribute or sell your own version of the OS. This is why you see many customized Linux distributions tailored to specific needs, with different features, packages, and support options, all while the underlying code remains openly available. In contrast, Windows and MacOS are proprietary and their licenses restrict redistribution of modified builds. Android has an open-source base, but distributing a derivative can involve trademark and service restrictions and isn’t as straightforward as with Linux.

Open-source licenses let you study, modify, and share software, and Linux embodies this model. Because Linux is distributed with permissive licenses, you can build on the existing code, add new functionality, and freely distribute or sell your own version of the OS. This is why you see many customized Linux distributions tailored to specific needs, with different features, packages, and support options, all while the underlying code remains openly available. In contrast, Windows and MacOS are proprietary and their licenses restrict redistribution of modified builds. Android has an open-source base, but distributing a derivative can involve trademark and service restrictions and isn’t as straightforward as with Linux.