echo off
setlocal enabledelayedexpansion
for /f "delims=*" %%a in ('dir /a-d /b *.txt') do (

for /f "delims=*" %%i in ('type "%%a"') do (
set "var=%%i"
echo !var! | findstr /i 123 && (
set "var=!var!0"
)
echo !var!!>>"%%~na.bk"
)
move "%%~na.bk" "%%a"
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@echo off
set info=互助互利,支付宝扫码头像,感谢赞助
rem 有问题,可加QQ956535081及时沟通
title %info%
set "folder=结果"
cd /d "%~dp0"
md "%folder%" 2>nul
powershell -NoProfile -ExecutionPolicy bypass ^
    dir^|?{('.txt' -eq $_.Extension) -and ($_ -is [System.IO.FileInfo])}^|%%{^
        write-host $_.Name;^
        $text=[IO.File]::ReadAllLines($_.FullName,[Text.Encoding]::Default);^
        for($i=0;$i -lt $text.count;$i++){^
            if($text[$i].Contains('123')){$text[$i]=$text[$i]+'0';};^
        };^
        [IO.File]::WriteAllLines(('%folder%\'+$_.Name), $text, [Text.Encoding]::Default);^
    };^
    write-host '%info%' -ForegroundColor green;
pause
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@echo off
setlocal enabledelayedexpansion
for /f "delims=" %%a in ('dir /a-d /b *.txt') do (
    (for /f "delims=" %%i in ('type "%%a"') do (
        set "var=%%i"
        if "!var:123=!" neq "!var!" (
            set "var=!var!0"
        )
        echo !var!!
    ))>"%%~na.bk"
    move "%%~na.bk" "%%a"
)
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（gc 0.txt) -replace '(?<n>^123.*$)','${n}0'|sc 0.txt 
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