Sophos not updating 2016
You can find documentation for the individual GNU tools typically as man pages or info pages as part of the Cygwin net distribution. Note that when we say "free" we mean freedom, not price.
The goal of such freedom is that the people who use a given piece of software should be able to change it to fit their needs, learn from it, share it with their friends, etc.
The packages in Cygwin are continually improving, thanks to the efforts of net volunteers who maintain the Cygwin binary ports.
The setup program will handle the task of updating the packages on your system to the latest version.Keep in mind that Cygwin can only do as much as the underlying OS supports.Because of this, Cygwin will behave differently, and exhibit different limitations, on the various versions of Windows.State January 2016 this includes Windows Vista, Windows Server 2008 and all later versions of Windows up to Windows 10 and Windows Server 2016.The 32 bit version of Cygwin also runs in the WOW64 32 bit environment on released 64 bit versions of Windows, the 64 bit version of course only on 64 bit Windows.