Updating Cygwin and packages

[Buchbinder, Barry (NIH/NIAID) [E]]

Andre Bonhote wrote on Tuesday, October 02, 2007 7:38 AM:
> Greg Chicares <gchicares <at> sbcglobal.net> writes:
> 
>> 
>> On 2007-10-01 06:24Z, D wrote:
>>> When I downloaded and installed cygwin I had installed various
>>> packages.  I
> was wondering
>>> how do I go about updating those packages and cygwin for that matter
>>> if
> possible.
>> 
>> Run 'setup.exe' again.
> 
> Greg, is there a command line way to do this? like "port upgrade
> outdated", "yum upgrade" or "emerge world"? 

The FAQ is your friend:
http://cygwin.com/faq/faq.setup.html#faq.setup.cli