比较 Powershell 脚本中断前后多个子目录的大小

Question

我是Powershell的初学者，还请原谅我的英语不是最好的。

Directory

我的目标是在脚本运行时更新目标目录。所以我做了这个脚本

$path = "C:\Users\s611284\Desktop\archive"

#Check that the directories have the correct name and calculate their size

Get-ChildItem -Force $path -ErrorAction SilentlyContinue -Directory | foreach {
     
  $Size = (Get-ChildItem $_.fullname -Recurse -ErrorAction SilentlyContinue | Measure-Object -Property Length -Sum).Sum/ 1Kb

  $FolderName = $_.BaseName -match '1B(\d{6})_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{6})' -or $_.BaseName -match '1B(\d{6})_SML 10_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{5})' 

  $Folder = $_.BaseName

  if ($FolderName -eq "true") {
    write-host(" name $Folder is correct, $Size Kb")
  }
  else {
    write-host( "name $Folder is incorrect")
  }
}  

#Break 

Start-Sleep -Seconds 30

write-host( "end of break")
 

#directory size calculation after the break

Get-ChildItem -Force $path -ErrorAction SilentlyContinue -Directory | foreach {
     
  $Size1 = (Get-ChildItem $_.fullname -Recurse -ErrorAction SilentlyContinue | Measure-Object -Property Length -Sum).Sum/ 1Kb

  $FolderName1 = $_.BaseName -match '1B(\d{6})_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{6})' -or $_.BaseName -match '1B(\d{6})_SML 10_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{5})' 

  $Folder1 = $_.BaseName

  if ($FolderName1 -eq "true") {
    write-host("name $Folder1 is correct, $Size1 Kb")
  }
  else {
    write-host( "name $Folder1 is incorrect")
  }
}

所有这些都运行良好

所以现在我想比较一下break前后的子目录大小，知道哪些已经更新了

我试过了

if ( $FolderSize -eq $FolderSize1 )
{
    Write-Output $True
}

Else
{ 
  Write-Output $False
}

在我的第二个区块的末尾，但它不起作用..

我也试过比较对象，但我认为这个命令对我的情况没有帮助

我希望你们能理解我的post并帮助我谢谢！

Answer 1

如果我没理解错的话，您要过滤那些 30 秒后大小发生变化的文件夹，如果是这样的话，您可以使用 function so that you don't need to repeat your code. You can make your function return a hash table 其中键是文件夹的绝对路径，值是它们的计算大小，一旦你得到两个结果（30 秒前和 30 秒后），你可以运行比较两个哈希表输出一个新对象文件夹的绝对路径、前大小和后大小仅适用于计算大小[=14]的文件夹=]已经改变.

function GetFolderSize {
    [cmdletbinding()]
    param($path)
    
    $map = @{}
    Get-ChildItem $path -Directory -Force | ForEach-Object {
        $Size = (Get-ChildItem $_.Fullname -Recurse | Measure-Object -Property Length -Sum).Sum / 1Kb
        $FolderName = $_.BaseName -match '1B(\d{6})_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{6})' -or $_.BaseName -match '1B(\d{6})_SML 10_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{5})'
        if ($FolderName) {
            $map[$_.FullName] = $size
        }
    }
    if($map) { $map }
}

$path = "C:\Users\s611284\Desktop\archive"

$before = GetFolderSize $path -ErrorAction SilentlyContinue
Start-Sleep -Seconds 30
$after = GetFolderSize $path -ErrorAction SilentlyContinue

foreach($key in $after.PSBase.Keys) {
    if($before[$key] -ne $after[$key]) {
        # this is a folder with a different size than before
        [PSCustomObject]@{
            FullName   = $key
            SizeBefore = $before[$key]
            SizeAfter  = $after[$key]
        }
    }
}

Answer 2

不是为了摆脱 Santiago's helpful ，而是为了提供替代解决方案，这是我的看法：

$path  =  "C:\Users\s611284\Desktop\archive"
$count = 0 
$hashMap = @{}
While ($count -lt 2) {
    Get-ChildItem -Path $path -Directory | 
        ForEach-Object -Begin {
            $count++
            $toMatch = "1B(\d{6})_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{6})|1B(\d{6})_SML 10_LEAP 1A version aout2021_(\d{4})-(\d{2})-(\d{2})T(\d{2})h(\d{2})m(\d{2})s_S(\d{5})" 
        } -Process {
            $folderMatch = $_.BaseName -match $toMatch
                if ($folderMatch) {
                    $size = (Get-ChildItem -Path $_.FullName -Recurse -EA 0 | Measure-Object -Property "Length" -Sum).Sum / 1kb
                    if (-not$hashMap.ContainsKey($_.BaseName))  {
                        $hashMap.Add($_.BaseName,$size)
                    }
                    if ($count -ge 2) {
                        if ($hashMap[$_.BaseName] -ne $size) {
                            $_.BaseName + " " + "is a different size" 
                        }
                    }
                }
        } -End {
            if ($count -ne 2) {
                Start-Sleep -Seconds 30
            }
        }
}

就我个人而言，我讨厌 re-use 代码，并且觉得如果您发现自己在重复代码，总能有所作为 (copy/paste) .

我的问题是：

这些文件夹的名字是不是很独特？
你能不能用它代替 Wild Card Expression？
- 即：$_.BaseName -like '*1A version aout2021*'
- 一切以“清洁度”代码为名。哈哈

比较 Powershell 脚本中断前后多个子目录的大小

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