title: Use of FTP "append" command
body: <p>I want to upload a file to a ftp server programmatically (C++). If the connection is lost while uploading a file, I wouldn't want to upload the file from scratch, but to upload only the part that I haven't sent.</p>
  
  <p>Does the APPE command fulfill my demand? What list of FTP commands should I use exactly? And how?</p>