def Run(self, args):
    """Delete all the GRR temp files in path.

    If path is a directory, look in the top level for filenames beginning with
    Client.tempfile_prefix, and delete them.

    If path is a regular file and starts with Client.tempfile_prefix delete it.

    Args:
      args: pathspec pointing to directory containing temp files to be
            deleted, or a single file to be deleted.
    Returns:
      deleted: array of filename strings that were deleted
    Raises:
      ErrorBadPath: if path doesn't exist or is not a regular file or directory
    """

    allowed_temp_dirs = [
        GetTempDirForRoot(root)
        for root in config.CONFIG["Client.tempdir_roots"]
    ]

    if args.path:
      # Normalize the path, so DeleteGRRTempFile can correctly check if
      # it is within Client.tempdir.
      path = utils.NormalizePath(args.path)
      if platform.system() == "Windows":
        # TODO: On non-Windows systems `CanonicalPathToLocalPath`
        # is equivalent to `SmartStr`, so it does nothing except for breaking
        # the types. However, a lot of code actually depends on this behaviour
        # so we cannot easily change it. As a workaround for now we simply do
        # not call it on Linux and macOS but ideally we should get rid of this
        # `SmartStr` call and not branch here.
        path = client_utils.CanonicalPathToLocalPath(path)

      paths = [path]
    else:
      paths = allowed_temp_dirs

    deleted = []
    errors = []
    for path in paths:
      if os.path.isdir(path):
        for filename in os.listdir(path):
          abs_filename = os.path.join(path, filename)

          try:
            DeleteGRRTempFile(abs_filename)
            deleted.append(abs_filename)
          except Exception as e:  # pylint: disable=broad-except
            # The error we are most likely to get is ErrorNotTempFile but
            # especially on Windows there might be locking issues that raise
            # various WindowsErrors so we just catch them all and continue
            # deleting all other temp files in this directory.
            errors.append(e)

      elif os.path.isfile(path):
        DeleteGRRTempFile(path)
        deleted = [path]

      elif path not in allowed_temp_dirs:
        if not os.path.exists(path):
          raise ErrorBadPath("File %s does not exist" % path)
        else:
          raise ErrorBadPath("Not a regular file or directory: %s" % path)

    reply = ""
    if deleted:
      reply = "Deleted: %s." % deleted
    else:
      reply = "Nothing deleted."
    if errors:
      reply += "\n%s" % errors

    self.SendReply(rdf_client.LogMessage(data=reply))