title: Compare folders and delete duplicates
body: <p>I have a folder (dated with yesterday's date) on our R Drive for each day's reports.</p>
  
  <p>These are copied over each morning from our J Drive, to which only some people have access. I do the copy with PowerShell but am fairly new to it, so have always been too scared to use MOVE instead of COPY, and to delete the originals from the J Drive. So I do that manually after ensuring the copy was successful.</p>
  
  <p>What I want to do is: find all files (they are txt and ZIP) in the R Drive folder, that ALSO exist on the J Drive, and if their sizes are the same, delete the ones on the J Drive.</p>
  
  <p>What is the best way of doing this? I'd prefer to not handle each file separately.</p>