⑧安薇理工大学 ANHUI UNIVERSITY OFSCIENCE TECHNOLOG hat is GNU? The GNU operating system is a complete free software system, upward-compatible with Unix. GNU stands for GNU's Not Unix" richard Stallman made the initial Announcement of the GNU Pro ject in September 1983 Source: http://www.gnu.org/gnu/initial announcement. htm4 What is GNU? ➢ The GNU operating system is a complete free software system, upward-compatible with Unix. GNU stands for “GNU's Not Unix”. Richard Stallman made the Initial Announcement of the GNU Project in September 1983. Source: http://www.gnu.org/gnu/initial￾announcement.html