@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%i in ('dir /b /a-d ^|findstr /e "\.[1-9][0-9]*"') do (
    set m=%%~xi
    set m=!m:.=!
    if not "%%~ni"=="!str1!" (
        if defined str1 ren "!str1!!str2!" "!str1!.1"
        set /a n=m
        set str1=%%~ni
        set str2=%%~xi
    ) else (
        if !m! gtr !n! (
            set /a n=m
            del "!str1!!str2!"
            set str2=%%~xi
        ) else (
            del "%%i"
        )
    )
)
ren "!str1!!str2!" "!str1!.1"
pause
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@echo off
cd /d "%~dp0"
dir/s/b/a-d|gawk "match($0,/(^.+\\)([^\\]+)\.([0-9]+)$/,arr){++i;b[i]=arr[2];c[i]=arr[3];d[i]=$0;if(f[arr[2]]+0<arr[3]){f[arr[2]]=arr[3]}}END{for(j=1;j<=i;j++)if(!(f[b[j]]==c[j])){print \"del \" \"\\\"\" d[j] \"\\\"\"}}"|cmd.exe
dir/s/b/a-d|gawk "match($0,/(^.+\\)([^\\]+)\.([0-9]+)$/,arr){print \"move /Y \\\"\" $0 \"\\\" \\\"\" arr[1] arr[2] \".1\" \"\\\"\"}"|cmd.exe
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@echo off
PowerShell -c "dir -Literal '%~dp0' -Recurse | ?{ $_ -is [IO.FileInfo] -and $_.Extension -match '^\.[1-9]\d*$' } | sort{ 1 * $_.Extension.Trim('.') } | group{ $_.FullName -replace '\.\d+$' } | forEach{ $n = $_.Count - 1; for($i=0;$i -lt $n;$i++){ del -Literal $_.Group[$i].FullName -WhatIf } mv -Literal $_.Group[$n].FullName -Dest ($_.Name + '.1') -WhatIf }"
pause
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@echo off & setlocal enabledelayedexpansion
if "%~1" == "" (
    for /f "tokens=1,3 delims=/" %%i in ('"%~f0" ARG ^| sort') do (
        if /i "%%i" == "!f!" (
            echo;del "!f!!e!"
        ) else if defined f (
            for /f "delims=" %%k in ("!f!") do echo;ren "!f!!e!" "%%~nxk.1"
        )
        set "f=%%i"
        set "e=%%j"
    )
    if defined f (
        for /f "delims=" %%k in ("!f!") do echo;ren "!f!!e!" "%%~nxk.1"
    )
    pause & exit
) else (
    for /f "delims=" %%i in ('dir /b /a-d /s ^| findstr "\.[1-9][0-9]*$"') do (
        for /f "delims=." %%j in ("%%~xi") do set "s=0000000000%%j"
        echo;%%~dpni/!s:~-10!/%%~xi
    )
)
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ls ".\*" -r|?{!$_.PsIsContainer -and $_.Extension -match '\.\d+$'}|sort @{e={$_.Extension.Trim('.') -as [int]}}|%{mv -Literal $_.FullName -dest ($_.DirectoryName+'\'+$_.BaseName+'.1') -Force;
}
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mapkey $F12 @SYSTEMpurge & del /q *.out *.sec.* *.m_p *.acc.* *.err *.inf.* \
mapkey(continued) *.crc.* *.log.* *.lst *.out *.pic *.pls *error.* *log.xml trail.txt* \
mapkey(continued) *.ers* current_session.pro* *.bak.* \
mapkey(continued) & call X:\\XX\\XX\\删后缀序号.bat;
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$path = $MyInvocation.MyCommand.Path -replace '\\[^\\]+$';  #当前脚本目录
$hash = @{};
$max  = @{};

$files = dir -Literal $path -Recurse | ?{ $_ -is [IO.FileInfo] -and $_.Extension -match '^\.[1-9]\d*$' }
$count = $files.Count;

for( $i = 0; $i -lt $count; $i++ ){
    $key = $files[$i].DirectoryName + '\' + $files[$i].BaseName;
    $ext = 1 * $files[$i].Extension.Trim('.');
    if( $hash[$key] -isNot [Collections.ArrayList] ){
        $hash[$key] = [Collections.ArrayList]@();
    }
    [void]$hash[$key].Add( $files[$i].FullName );   #文件全名加入HashTable
    if( $max[$key] -lt $ext ){ $max[$key] = $ext; } #最大版本号
}

forEach( $key In $hash.Keys ){
    $maxFile = $key + '.' + $max[$key];             #最大版本号文件
    if( $hash[$key].Count - 1 ){
        $hash[$key].Remove( $maxFile );             #从数组移除
        Remove-Item -Literal $hash[$key] -WhatIf;   #删除文件
    }
    Move-Item -Literal $maxFile -Dest ( $key + '.1' ) -WhatIf;  #移动（改名）
}

[Console]::ReadLine();
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@echo off
for %%i in (Test1 Test2 Test3 Test4) do (
    md %%i 2>nul
    for %%j in (a b c d e f g h i j k l m n o p q r s t u v w x y z) do (
        for %%k in (txt prt pro drw asm mfg frm sec) do (
            for /L %%x in (1 11 400) do (
                echo;%%j.%%k.%%x > "%%i\%%j.%%k.%%x"
            )
        )
    )
)
pause
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@echo off
echo %time%
PowerShell -c "dir -Literal '%~dp0' -Recurse | ?{ $_ -is [IO.FileInfo] -and $_.Extension -match '^\.[1-9]\d*$' } | sort{ 1 * $_.Extension.Trim('.') } | group{ $_.FullName -replace '\.\d+$' } | forEach{ $n = $_.Count - 1; for($i=0;$i -lt $n;$i++){ del -Literal $_.Group[$i].FullName } mv -Literal $_.Group[$n].FullName -Dest ($_.Name + '.1') }"
echo %time%
pause
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@echo off & setlocal enabledelayedexpansion
if "%~1" == "" (
    echo !time!
    for /f "tokens=1,3 delims=/" %%i in ('"%~f0" ARG ^| sort') do (
        if /i "%%i" == "!f!" (
            del "!f!!e!"
        ) else if defined f (
            for /f "delims=" %%k in ("!f!") do ren "!f!!e!" "%%~nxk.1"
        )
        set "f=%%i"
        set "e=%%j"
    )
    if defined f (
        for /f "delims=" %%k in ("!f!") do ren "!f!!e!" "%%~nxk.1"
    )
    echo !time!
    pause & exit
) else (
    for /f "delims=" %%i in ('dir /b /a-d /s ^| findstr "\.[1-9][0-9]*$"') do (
        for /f "delims=." %%j in ("%%~xi") do set "s=0000000000%%j"
        echo;%%~dpni/!s:~-10!/%%~xi
    )
)
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@echo off
echo %time%
PowerShell "ls -Literal '%~dp0' -r|?{!$_.PsIsContainer -and $_.Extension -match '\.\d+$'}|sort @{e={ $_.Extension.Trim('.') -as [int]}}|%%{mv -Literal $_.FullName -dest ($_.DirectoryName+'\'+$_.BaseName+'.1') -Force;}"
echo %time%
pause
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$t = get-Date;
$path = $MyInvocation.MyCommand.Path -replace '\\[^\\]+$';  #当前脚本目录
$hash = @{};
$max  = @{};

$files = dir -Literal $path -Recurse | ?{ $_ -is [IO.FileInfo] -and $_.Extension -match '^\.[1-9]\d*$' }
$count = $files.Count;

for( $i = 0; $i -lt $count; $i++ ){
    $key = $files[$i].DirectoryName + '\' + $files[$i].BaseName;
    $ext = 1 * $files[$i].Extension.Trim('.');
    if( $hash[$key] -isNot [Collections.ArrayList] ){
        $hash[$key] = [Collections.ArrayList]@();
    }
    [void]$hash[$key].Add( $files[$i].FullName );   #文件全名加入HashTable
    if( $max[$key] -lt $ext ){ $max[$key] = $ext; } #最大版本号
}

forEach( $key In $hash.Keys ){
    $maxFile = $key + '.' + $max[$key];             #最大版本号文件
    if( $hash[$key].Count - 1 ){
        $hash[$key].Remove( $maxFile );             #从数组移除
        Remove-Item -Literal $hash[$key];   #删除文件
    }
    Move-Item -Literal $maxFile -Dest ( $key + '.1' );  #移动（改名）
}
((get-Date) - $t).Totalseconds
[Console]::ReadLine();
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