Question

尝试在读取2个文件时进行2次循环，从第一个文件中获取1个值的目的是将其与第二个文件中的1,2,3rd ......等值进行比较，然后返回到外部循环，取第2个值并进行比较按顺序排列第二个文件中的所有值，依此类推。

问题是它只在第一个文件中的第一个值上运行比较并停止。

代码：

Get-ExecutionPolicy
$main_list = [System.IO.File]::OpenText('c:\ping-workstations\main_list.txt')
$retired = [System.IO.File]::OpenText('c:\ping-workstations\retired.txt')

$main_i = 1
$retired_i = 1
[string]$main_list_line
[string]$retired_list_line

try
{
    while(!$main_list.EndOfStream)
    {   
        $main_list_line = $main_list.ReadLine()

        while(!$retired.EndOfStream)
        {   
            $retired_list_line =  $retired.readline()

            if($main_list_line -eq $retired_list_line)
            {
                write-host "`n`n`n match found for $main_list_line in main list `n`n`n`n"
                add-content "c:\ping-workstations\matches-through-text-files.txt" "$main_list_line`n"
            }   
            write-host "main iteration: $main_i / inside iteration: $retired_i`n - main value: $main_list_line ---- inside value: $retired_list_line`n`n"
            $retired_1++
        }
        $main_i++
    }
}
finally
{
    $main_list.close()
    $retired.close()
}

Answer 1

内循环结束后，您需要重新打开$ retired文件。正如现在所写的那样，一旦内部循环遍历$ retired文件，$ retired.EndOfStream将永远保持为真。

try
{
    while(!$main_list.EndOfStream)
    {   
        $main_list_line = $main_list.ReadLine()

        while(!$retired.EndOfStream)
        {   
            $retired_list_line =  $retired.readline()

            if($main_list_line -eq $retired_list_line)
            {
                write-host "`n`n`n match found for $main_list_line in main list `n`n`n`n"
                add-content "c:\ping-workstations\matches-through-text-files.txt" "$main_list_line`n"
            }   
            write-host "main iteration: $main_i / inside iteration: $retired_i`n - main value: $main_list_line ---- inside value: $retired_list_line`n`n"
            $retired_1++
        }
        $main_i++
        $retired.close()
        $retired = [System.IO.File]::OpenText('c:\ping-workstations\retired.txt')
    }
}
finally
{
    $main_list.close()
    $retired.close()
}

作为旁注，您是否考虑过使用Powershell ISE？它具有调试功能;通过设置断点并单步执行代码，我能够快速发现问题。

两个循环两个文件比较 - powershell

1 个答案: