title: Copy&Replace only files with different content
body: <p>I copy files from folder A to folder B including subfolder. If files already exists in folder B I want to replace them only when content is different. I dont want to overwrite timestamps on files with the same content.</p>
  
  <p>I can do it easily using total commander or simmilar tool, but i would like to be able to do it only using command line, visual studio command prompt or powershell. tf diff command is an option</p>