Cygwin's default person interface is definitely the bash shell running in the mintty terminal emulator.[25] The DLL also implements pseudo terminal (pty) devices, and Cygwin ships with many terminal emulators which are based on them, which includes rxvt/urxvt and xterm. The Edition of GCC that includes Cygwin has different extensions https://sethviqzg.articlesblogger.com/59475074/the-best-side-of-acgwin