aloha20200628

先用 dir/b/a-d/o:n 生成按文件名排序的简报，其中同名组数量为一者即lz所求...
如目录文件量较多，可将 dir/b/a-d/o:n 移出 for...()

setlocal enabledelayedexpansion
set "n=0" & set "lastF= "
for /f "delims=" %%F in ('dir/b/a-d/o:n') do (
    if "!lastF!" neq "%%~nF" (
	if !n! equ 1 (echo,!Flast!)
	set "n=0"
    )
    set/a "n+=1" &set "lastF=%%~nF" &set "Flast=%%F"
)
if !n! equ 1 (echo,!Flast!)
endlocal&pause&exit/b
复制代码