def _cli_find_file(cli):
    u"""list file names matching regular expression

    To find e.g. all '.py' files in current folder use::

        fspath find ".*\\.py$"  .
    """
    for match in cli.folder.reMatchFind(cli.regexpr, use_dirs=not cli.
        nodirs, use_files=not cli.nofiles):
        cli.OUT.write(match + '\n')
