title: What is cygwin and what does it do
body: <p>after searching about it i found some info (yet confusing for me)</p>
  
  <blockquote>
    <p>Cygwin is a Unix-like environment and command-line interface for Microsoft Windows. </p>
  </blockquote>
  
  <p>i found the above line in wikipedia but what does that mean?
  i'm not getting a clear idea about MinGW and cygwin and msys, please help</p>