Many of the GNU tools are reimplementation of already existing tools. For example the initial implementation of AWK was in 1977 [1], a few years before GNU eve

Many of the GNU tools are reimplementation of already existing tools. For example the initial implementation of AWK was in 1977 [1], a few years before GNU even existed [2], so it _is_ a Unix tool. [1] https://en.wikipedia.org/wiki/AWK#History https://en.wikipedia.org/wiki/AWK#History [2] https://en.wikipedia.org/wiki/GNU#History https://en.wikipedia.org/wiki/GNU#History