获取最常见的逗号计数、其行数和总行数

您可以这样做,将相关的数据片段打包到每个文件的自定义对象中:

ls | select -First 10 |
% { 
    $numLines = 0
    $grouped = cat $_ `
               |%{ $numLines++; $_ }  `
               | Select-String ',' -AllMatches `
               | Select-Object LineNumber, @{ n = "Count"; e = { $_.Matches.Count }} `
               | Group-Object Count `
               | sort Count -Desc

    [PsCustomObject] @{
         File = $_.FullName
         TopCommaCount = [int] $grouped[0].Name
         TopCommaCountLines = [int] $grouped[0].Count
         TotalLines = $numLines
     }
}

如果我理解你的要求,你应该按计数(降序)对Group的输出进行排序,并选择第一个:

ls | select -First 10 |
% { 
    $_.FullName;
    cat $_ | Select-String `, -AllMatches | 
    Select-Object LineNumber, @{ n = "Count"; e = { $_.Matches.Count }} |
    Group-Object Count | Sort Count -Descending | Select-Object -First 1
}

要用逗号测量行数,请执行以下操作:

ls | select -First 10 |
% { 
    $_.FullName;
    cat $_ | Select-String `, -AllMatches | 
    Select-Object LineNumber, @{ n = "Count"; e = { $_.Matches.Count }} |
    Measure-Object Count
}