Where's the documentation? If you have installed Cygwin, you can find lots of documentation in /usr/share/doc/. Some packages have Cygwin specific instructions in a file /usr/share/doc/Cygwin/package_name.README. In addition, many packages ship with standard documentation, which you can find in /usr/share/doc/package_name or by using the man or info tools. (Hint: use cygcheck -l package_name to list what man pages the package includes.) Some older packages still keep their documentation in /usr/doc/ instead of /usr/share/doc/. There are links to quite a lot of documentation on the main Cygwin project web page, , including this FAQ. Be sure to at least read any 'Release Notes' or 'Readme' or 'read this' links on the main web page, if there are any. There is a comprehensive Cygwin User's Guide at and an API Reference at . You can find documentation for the individual GNU tools at . What Cygwin mailing lists can I join? Comprehensive information about the Cygwin mailing lists can be found at . What if I have a problem? (Or: Why won't you/the mailing list answer my questions?) Comprehensive information about reporting problems with Cygwin can be found at .