@echo off
dir /b /os *.tif>"%temp%\$$"
set /p Min=<"%temp%\$$"
for /f "useback delims=" %%i in ("%temp%\$$") do set Max=%%i
ren "%Min%" "fm.tif"
ren "%Max%" "fd.tif"
del "%temp%\$$
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ren ??????.tif fm.tif 2>nul
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@echo off
for /f %%a in ('dir /b /on ??????.tif') do (
    if not defined min set "min=%%a"
    set "max=%%a"
)
ren "%min%" fm.tif
ren "%max%" fd.tif
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@echo off & setlocal enabledelayedexpansion
set "subdir="
for /f "delims=" %%a in ('dir /s /b /on ??????.tif') do (
    if not "%%~psa"=="!subdir!" (
        for %%s in (!subdir!) do (
            ren "!%%smin!" fm.tif
            ren "!%%smax!" fd.tif
        )
        set "subdir=%%~psa"
    )
    if not defined %%~psamin set "%%~psamin=%%a"
    set "%%~psamax=%%a"
)
for %%s in (!subdir!) do (
    ren "!%%smin!" fm.tif
    ren "!%%smax!" fd.tif
)
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@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /b /s /on ??????.tif^&echo;') do (
    ren "%%i" fm.tif
    for %%j in ("!strFile!") do (
        if /i not "%%~dpi"=="%%~dpj" ren "!strFile!" fd.tif
    )
    set "strFile=%%i"
) 2>nul
pause
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