Origins
When the GNU project first started they "had an Emacs text editor with Lisp for writing editor commands, a source level debugger, a yacc-compatible parser generator, and a linker".[3] The GNU system required its own C compiler and tools to be free software, so that these also had to be developed. By June 1987 the project had accumulated and developed free software for an assember, an almost finished portable optimizing C compiler (GCC), an editor (GNU Emacs), and various Unix utilities (such as
ls
, grep
, awk
, make
and ld
).[4] They had an initial kernel that needed more updates.
Once the kernel and the compiler were finished GNU was able to be used for program development. The main goal was to create many other applications to be like the Unix system. GNU was able to run Unix programs but was not identical to it. GNU incorporated longer file names, file version numbers, and a crashproof file system. The GNU Manifesto was written to gain support and participation from others for the project. Programmers were encouraged to take part in any aspect of the project that interested them. People could donate funds, computer parts, or even their own time to write code and programs for the project.[2]