用bat操作注册表实现不显示扩展名
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t reg_dword /d 00000001 /f
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v HideFileExt /t reg_dword /d 00000001 /f