Introduction Since Emacs depends on a lot of Unix commands, I found a lot of Gnu Emacs functions are not working properly under Windows environment. Fortunately, I have discovered Cygwin recently. Cygwin contains a set of essential Unix utilities that make my Gnu Emacs works almost the same as the Emacs under Unix enviroment. After Cygwin is installed, I can use Unix commands like ls, pwd, cp, mv,