#&cls&@cd /d "%~dp0"&powershell -c "Get-Content '%~0' | Out-String | Invoke-Expression" & pause&exit
cls
#文本编码 ascii utf8
$txt_enc = 'utf8'
#插入行数,0开始
$line_num = 306
#插入内容
$insert_txt = @'
307：:123456789
308:23457823
'@
Get-ChildItem '*.txt' | foreach {
    Write-Host $_.FullName
    $arr = Get-Content $_.FullName -Encoding $txt_enc
    if($arr.Count -ge $line_num){
        &{
            $arr[0..($line_num-1)]
            $insert_txt
            $arr[$line_num..($arr.Count-1)]
        } | Out-File $_.FullName -Encoding $txt_enc
    }
}
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@echo off
cd /d "%~dp0"
powershell -c "gci .\*.txt|foreach-object{$lines=($_|gc -readcount 0);if($lines.count -ge 307){$lines[306]=($lines[306],'123456789','23457823') -join ([environment]::newline);sc -literalpath $_.fullname -value $lines;}}"
pause
exit /b
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