Powershell，查看（循环）所有驱动器

我是 Powershell 新手，我尝试在网上寻找问题的解决方案，但似乎找不到。基本上我需要写一些东西，让 powershell 浏览所有驱动器和目录以找到以下内容：

文件总数（不包括文件夹）、最大文件大小、平均文件大小、总文件大小

这是我到目前为止所写的：

$source = "get-psdrive"

#attempt at looking through all drives/directories which didn't work
foreach($a in $source) {

    #counts files in given directory
    Get-ChildItem -Recurse -File -ErrorAction SilentlyContinue -Force |
        Measure-Object |
        ForEach-Object { $_.Count }

    #select largest file in given directory
    Get-ChildItem -Recurse -File -ErrorAction SilentlyContinue -Force |
        Sort-Object Length -Descending |
        Select-Object -First 1

    #get average file size in a given directory
    Get-ChildItem -Recurse -File -ErrorAction SilentlyContinue -Force |
        Measure-Object -Property Length -Average

    #sum of file sizes in given directory
    (Get-ChildItem -Recurse -File -ErrorAction SilentlyContinue -Force |
        Measure-Object -Sum Length).Sum
}

问题是它只在C盘中查找。我不知道是否有办法查看我的计算机而不是特定的驱动器，但我似乎找不到办法。任何帮助表示赞赏。

With "..."您定义了一个字符串，因此在您的示例中您尝试循环遍历一个字符串。

试试这样：

$Drives = Get-PSDrive -PSProvider 'FileSystem'

foreach($Drive in $drives) {

    #counts files in given directory
    Get-ChildItem -Path $Drive.Root -Recurse -File -ErrorAction SilentlyContinue -Force |
        Measure-Object |
        ForEach-Object { $_.Count }

    #select largest file in given directory
    Get-ChildItem -Path $Drive.Root -Recurse -File -ErrorAction SilentlyContinue -Force |
        Sort-Object Length -Descending |
        Select-Object -First 1

    #get average file size in a given directory
    Get-ChildItem -Path $Drive.Root -Recurse -File -ErrorAction SilentlyContinue -Force |
        Measure-Object -Property Length -Average

    #sum of file sizes in given directory 
    (Get-ChildItem -Path $Drive.Root -Recurse -File -ErrorAction SilentlyContinue -Force |
        Measure-Object -Sum Length).Sum

}

笔记！我没有改变你的Get-ChildItem代码（除了搜索路径）。我只写了foreach loop.