Cygwin's default user interface will be the bash shell operating within the mintty terminal emulator.[25] The DLL also implements pseudo terminal (pty) devices, and Cygwin ships with many terminal emulators which can be determined by them, like rxvt/urxvt and xterm. The Edition of GCC that comes with Cygwin has various https://acgwin70112.ampblogs.com/getting-my-acgwin-to-work-73863845