全选，F2修改后， filename (1), filename (2), .....
用此bat修改为filename1, filename2, ...
@Echo Off&SetLocal ENABLEDELAYEDEXPANSION FOR %%a in (*) do ( set "name=%%a" set "name=!name: (=!" set "name=!name:)=!" ren "%%a" "!name!" ) exit
原文：http://www.cnblogs.com/wzktravel/p/4090053.html