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This article mainly introduces GNU refers to what, the text is very detailed, has a certain reference value, interested friends must read!

GNU is a free operating system, and its content software is distributed entirely under the GPL. This operating system is the main target of the GNU Project, named after GNU's Not Unix! GNU is a recursive acronym for Unix because GNU is similar in design to Unix, but it does not contain copyrighted Unix code. GNU's founder, Richard Matthew Stallman, saw GNU as a "technical means to social ends."

GNU's development as an operating system is still incomplete, and the biggest problem is that a fully functional kernel has not yet been developed. The GNU kernel, called Hurd, was the focus of the Free Software Foundation's development, but it was not yet mature. In practice, alternatives such as the Linux kernel and FreeBSD are mostly used as the core of the system, with the main operating system being the Linux distribution. The Linux operating system, which includes the Linux kernel and GNU components and software from other free software projects, can be called GNU/Linux (see GNU/Linux naming controversy).

composed

Main article: List of GNU packages

The basic components of the system include the GNU Compiler Suite (GCC), GNU's C library (glibc), and GNU's core toolkits (coreutils), as well as GNU Cashshell, which is also the GNU debugger (GDB), GNU binary utilities (binutils), and the GNOME desktop environment. GNU developers have contributed to the Linux port of GNU applications and tools, which are now widely used in other operating systems, such as Solaris, a BSD variant, and OS X.

Many GNU programs have been ported to other operating systems, including proprietary software such as Microsoft Windows and OS X. The GNU Project has proven to be more reliable than their proprietary Unix. As of November 2015, there were 466 GNU packages (including decommissioning, but not including 383) hosting official GNU development sites nationwide.

GNU variant

Main article: GNU variants

The official core of the GNU Project is GNU Hurd; however, as of 2012, the Linux kernel officially became part of the GNU Project under the name Linux-libre, and all variants of proprietary components were removed.

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