https://cygwin.com/setup-x86.exe
setup-x86 --allow-unsupported-windows --site http://ctm.crouchingtigerhiddenfruitbat.org/pub/cygwin/circa/2016/08/30/104223 --no-verify

cygwin官网：https://cygwin.com/install.html

64位XP SP2：

https://cygwin.com/setup-x86_64.exe

setup-x86_64 --allow-unsupported-windows --site http://ctm.crouchingtigerhiddenfruitbat.org/pub/cygwin/circa/64bit/2016/08/30/104235 --no-verify

64位cygwin装完要记得修改桌面图标的快捷方式，mintty后面加上.exe，不然打不开。

https://blog.csdn.net/ZLK1214/article/details/150589868