powershell - 从字节转换为GB或MB不会返回任何内容

Question

我得到了这段代码，该代码返回字节数:

$size = Get-ChildItem $userAccount.homeDirectory -Recurse | Measure-Object -Property Length -Sum

这可以正常工作，但不是非常用户友好，因此我想转换为兆字节或千兆字节。

谷歌搜索并查看示例之后，我尝试了以下方法:

$size = "{0:N2}" -f ((Get-ChildItem $userAccount.homeDirectory -Recurse | Measure-Object -Property Length -Sum).Sum / 1MB)

但是，PowerShell不返回任何内容。

知道为什么吗？

编辑:发布完整的代码。

功能:

Function Get-ADHomeDirectorySize
{
Param
(
    [Parameter(ValueFromPipeline=$true,Mandatory=$true)]
    [Microsoft.ActiveDirectory.Management.ADUser]$User
)
Begin
{
    $HomeD = @()
    $size = $nul
}
Process
{
    ForEach($userAccount in  $User)
    {
        $userAccount = Get-ADUser $userAccount -properties homeDirectory
        $size = "{0:N2}" -f ((Get-ChildItem $userAccount.homeDirectory -Recurse | Measure-Object -Property Length -Sum).Sum / 1MB)
        If($userAccount.homeDirectory -eq $nul)
        {
            Write-Host "`nERROR -- User: $userAccount has no Home Directory`n" -foregroundcolor red
            Return
        }
        $obj = New-Object System.Object
        $obj | add-member -type NoteProperty -name User -value $userAccount.Name
        $obj | add-member -type NoteProperty -name HomeDirectory -value $userAccount.homeDirectory
        $obj | add-member -type NoteProperty -name HomeDirectorySize -value $size.sum
        $HomeD += $obj

    }
}
End
{
    $HomeD
}
}

用于根据用户标识的输入列表生成报告的脚本:

Get-Content brukerlistetest.txt | Foreach-Object {Get-ADUser $_  -properties homeDirectory | ? {$_.homeDirectory -ne $nul} | Get-ADHomeDirectorySize | sort HomeDirectorySize | Format-Table -HideTableHeaders | out-file output.txt -width 120 -append}

Answer 1

您可以在第一个示例上执行数学运算:

$size = (Get-ChildItem $userAccount.homeDirectory -Recurse | Measure-Object -Property Length -Sum) / 1MB # or / 1GB

PowerShell具有定义字节的常量。

如果希望它是一个字符串，则可以使用字符串子表达式:

$size = "$((GCI $userAccount.homeDirectory -Recurse | Measure Length -Sum) / 1MB)MB"