echo "1st 2nd 3rd 4th"|find "1st"|find "3rd"
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set /p ppp=请输入要查找的后缀文件(格式如jpg或mp3):
FOR %%a in (c: d: e: f: g: h: i: j: k: l: m: n: o: p: q: r: s: t: u: v: w: s: y: z:) do dir /s/b %%a\*.%ppp%>>list.txt
start list.txt
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dir|findstr "txt log"
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@echo off&setlocal enabledelayedexpansion
echo -------c:\test------->list.txt
for /f "delims=" %%a in ('dir /b c:\test') do (
    for %%b in (.mp3 .wma) do (
        if /i "%%~xa" equ "%%b" echo %%~na>>list.txt
    )
)
for /f "delims=" %%a in ('dir /s /ad /b c:\test') do (
    for /f "delims=" %%b in ('dir /b "%%a"') do (
        for %%c in (.mp3 .wma) do (
            if /i "%%~xb" equ "%%c" set /a n+=1&set "_!n!=%%~nb"
        )
    )
    if !n! neq 0 (
       echo -------%%a------->>list.txt
       for /l %%d in (1,1,!n!) do call,echo %%_!n!%%>>list.txt
       set "n=0"
    )
)
start list.txt
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