For all Cygwin-related questions, observations, suggestions and bug reports, please check the resources available at this site, such as the FAQ, the User's Guide and the mailing list archives.

Only the minimal base packages from the Cygwin distribution are installed by default, which takes up about 100 MB. Clicking on categories and packages in the setup program package …

Cygwin is a Linux-like environment for Windows. It consists of a DLL (cygwin1.dll), which acts as an emulation layer providing substantial POSIX (Portable Operating System Interface) system …

I read the above but I want to bundle Cygwin with a product, and ship it to customer sites. How can I do this without conflicting with any Cygwin installed by the user?

A brief history of the Cygwin project Highlights of Cygwin Functionality Introduction Permissions and Security File Access Text Mode vs. Binary Mode ANSI C Library Process Creation Signals …

Cygwin User's Guide The Cygwin User's Guide is now available in several formats: Several HTML files, with Table of Contents One large compressed HTML file One PDF file Alternatively, you …

To install the Cygwin net release, go to https://cygwin.com/ and run setup-x86_64.exe to install the 64 bit version of Cygwin. This will download a GUI installer which can be run to download …

To install a basic Cygwin environment, run the Cygwin Setup program from the Cygwin homepage and click Next at each page. The default settings are correct for most users.

We have some preliminary docs on how to profile the Cygwin DLL. Information on building and using DLLs is here. Also note that there is quite a lot of useful information in the project mailing …

As long as the Cygwin CWD is usable as Windows CWD, the Cygwin and Windows CWDs are in sync within a process. However, if the Cygwin process changes its working directory into one …