$len_str = 5          #重复字符串长度
$file = '.\0.txt'     #文件

#====================================
$dic = @{}
 $ErrorActionPreference = 'SilentlyContinue';
gc |%{
    $len = $_.Length;
    if($len -lt $len_str){continue;}
    for($i = 0;$i -lt $len-$len_str+1;$i++){
        $key = $_.Substring($i,$len_str)
       $dic.Add( $key,0)
       if($? -eq $false){$dic[$key] +=1}      
    }
}
foreach($key in $dic.Keys){
    $cnt = $dic.Item($key)
    if($cnt){$key+":重复$cnt 次"}
}
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位于命令管道位置 1 的 cmdlet Get-Content
请为以下参数提供值:
Path[0]:
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@if(0)==(0) echo off
type 1.txt | cscript //nologo //e:jscript "%~f0" > new.txt
pause & exit /b
@end

var len = 5, map = {};
while( !WSH.StdIn.AtEndOfStream ){
    var str = WSH.StdIn.ReadLine();
    for( var i = 0; i < str.length - len + 1; i++ ){
        var key = str.substr(i, len);
        map[key] = map.hasOwnProperty(key) ? map[key] + 1 : 1;
    }
}
for( key in map ) if( map[key] > 1 ) WSH.Echo(key);
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@echo off
set srcF="a.txt" &set newF="a.new"
set/a "m=0","fsL=5" &::设置重复字段长度
setlocal enabledelayedexpansion
(for /f "usebackq delims=" %%s in (%srcF%) do (
	set "s=%%s" &(call :strLen s sL)
	set/a "n=!sL!-%fsL%","m+=1"
	for /L %%k in (0,1,!n!) do (
		set "sk=!s:~%%k,%fsL%!"
		(more +!m! %srcF%|findstr /i /c:"!sk!")>nul&&echo,!sk! 
	) 
))>%newF%
endlocal&exit/b

:strLen // %1为被测字符串变量名 %2为返回值变量名
(	set "str=a!%~1!"
	set "len=0"
	for /l %%a in (12,-1,0) do (
		set/a "len|=1<<%%a"
		for %%b in (!len!) do if "!str:~%%b,1!"=="" set/a "len&=~1<<%%a"
        )
)
if "%~2" neq "" set/a "%~2=!len!"
exit /b
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@set @v=1 /*
@echo off
set srcF="a.txt" &set newF="a.new"
set/a "m=0","fsL=5" &::设置重复字段长度
setlocal enabledelayedexpansion
(for /f "usebackq delims=" %%s in (%srcF%) do (
	for /f "delims=" %%v in ('cscript /e:jscript "%~f0" "%%~s" ') do set "sL=%%v"
	set "s=%%s" &set/a "n=!sL!-%fsL%","m+=1"
	for /L %%k in (0,1,!n!) do (
		set "sk=!s:~%%k,%fsL%!"
		(more +!m! %srcF%|findstr /i /c:"!sk!")>nul&&echo,!sk! 
	) 
))>%newF%
endlocal&exit/b
*/
v=WSH.Arguments; //获取命令行参数
WSH.Echo(v(0).length); //计算字符串长度
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