[文本处理] 批处理怎样在包含某字符串的行将指定数值运算后进行替换？

<#*,:&cls
@echo off
cd /d "%~dp0"
powershell -NoProfile -ExecutionPolicy RemoteSigned -Command ". ([ScriptBlock]::Create((Get-Content -LiteralPath \"%~0\" -ReadCount 0 | Out-String ))) "
pause
exit /b
#>
$evaluator = [System.Text.RegularExpressions.MatchEvaluator] {
  param([System.Text.RegularExpressions.Match]$m)
  ([long]$m.Value - 600).ToString()
}
$re = [regex]'(?i)(?<=\$BB0)\d+(?=\$HH)'
Get-ChildItem -Path .\*.txt | ForEach-Object {
  if (-not $_.psiscontainer) {
    $lines = [System.IO.File]::ReadAllLines($_.FullName)
    for ($i = 0; $i -lt $lines.Count; $i++) {
      if ($lines[$i] -match '\$CC32') {
        $lines[$i] = $re.Replace($lines[$i], $evaluator)
      }
    }
    [System.IO.File]::WriteAllLines($_.FullName,$lines)
  }
}
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