please include function dm_sendFileToOtherMachine. // for chunkSize

svoid dm_retrieveFileFromOtherMachine(S computerID, S remotePath, File f) {
  backupFile(f);
  
  long size = toLong(dm_evalOnOtherMachine(computerID, "fileSizeOrMinus1(fileRelativeToUserDir(" + quote(remotePath) + "))");
  if (size < 0) {
    if (f.exists())
      print("Deleting file: " + f);
    ret;
  }

  for (LongRange r : chunks(size, dm_sendFileToOtherMachine_chunkSize)) {
    print("Retrieving file chunk " + r + " of " + computerID + ":" + remotePath + " to " + f);
    byte[] chunk = cast dm_evalOnOtherMachine(computerID, "loadBinaryFileChunk(fileRelativeToUserDir(" + quote(remotePath) + "), " + r.start + "L, " + r.length() + ")");
    saveBinaryFilePart(f, r.start, chunk);
  }
  
  truncateFile(f, size);
  print("File retrieved: " + f);
}

Began life as a copy of #1020607