"The GNU/Linux naming controversy is a dispute among members of the free and open source software community relating to the normative branding of the computer operating systems commonly referred to as Linux.

GNU/Linux is the term promoted by the Free Software Foundation (FSF), its founder Richard Stallman, and its supporters, for operating systems that include GNU software and the Linux kernel.[1] The FSF argues for the term GNU/Linux because GNU was a longstanding project to develop a free operating system, of which the kernel was the last missing piece..."