Cygwin's default user interface is the bash shell running inside the mintty terminal emulator.[25] The DLL also implements pseudo terminal (pty) devices, and Cygwin ships with a number of terminal emulators that are based on them, including rxvt/urxvt and xterm. The Variation of GCC that includes Cygwin has a variety https://manuelqqpoo.win-blog.com/17878015/what-does-acgwin-mean