Cygwin is a <i>GNU</i> port, not a small, random, and non-compliant[1] subset of POSIX shell utilities.<p>[1] <a href="http:&#x2F;&#x2F;pubs.opengroup.org&#x2F;onlinepubs&#x2F;009696699&#x2F;utilities&#x2F;contents.html" rel="nofollow">http:&#x2F;&#x2F;pubs.opengroup.org&#x2F;onlinepubs&#x2F;009696699&#x2F;utilities&#x2F;con...</a>