Using PowerShell to replicate right clicking a folder and selecting properties - powershell

Question

I am trying to gather the Size/Size on disk and number of files/folders on a very large folder tree.
I have been using a script like the follow to gather some of this:
Get-ChildItem "C:\test" -recurse | Measure-Object -Sum Length | Select-Object `
#{Name="Path"; Expression={$directory.FullName}},
#{Name="Files"; Expression={$_.Count}},
#{Name="Size"; Expression={$_.Sum}}
Path Files Size
---- ----- ----
C:\test 470 11622961
But when I want to gather information on the number of folders and size on disk I'm having to run a separate script; which recuse through the folder tee again (Which takes a long time).
Is there an easy way of accessing the all this information the same way you can get it when you right click a folder and select properties shown below?
Are there any callable .exe files within system32 that can do this?

Answer 1

According to this answer in the Technet forums you can calculate the size on disk like this:
$afz = [MidpointRounding]::AwayFromZero
[math]::Round($_.Length / $clusterSize + 0.5, $afz) * $clusterSize
$clusterSize can be determined with the fsutil command (e.g. for drive C:):
PS C:\> fsutil fsinfo ntfsinfo C:\
NTFS Volume Serial Number : 0x648ac3ae16817308
Version : 3.1
Number Sectors : 0x00000000027ccfff
Total Clusters : 0x00000000004f99ff
Free Clusters : 0x0000000000158776
Total Reserved : 0x00000000000003e0
Bytes Per Sector : 512
Bytes Per Physical Sector : 512
Bytes Per Cluster : 4096
Bytes Per FileRecord Segment : 1024
Clusters Per FileRecord Segment : 0
...
Note that running fsutil requires admin privileges.
With that you can collect the information you're interested in like this:
$rootDir = "C:\test"
$afz = [MidpointRounding]::AwayFromZero
$clusterSize = fsutil fsinfo ntfsinfo (Get-Item $rootDir).PSDrive.Root `
| Select-String 'Bytes Per Cluster' `
| % { $_.ToString().Split(':')[1].Trim() }
$stat = Get-ChildItem $rootDir -Recurse -Force `
| select Name, Length, #{n="PhysicalSize";e={
[math]::Round($_.Length / $clusterSize + 0.5, $afz) * $clusterSize
}}, #{n="Folder";e={[int]($_.PSIsContainer)}},
#{n="File";e={[int](-not $_.PSIsContainer)}} `
| Measure-Object -Sum Length, PhysicalSize, Folder, File
$folder = New-Object -TypeName PSObject -Property #{
"FullName" = $rootDir;
"Files" = ($stat | ? { $_.Property -eq "File" }).Sum;
"Folders" = ($stat | ? { $_.Property -eq "Folder" }).Sum;
"Size" = ($stat | ? { $_.Property -eq "Length" }).Sum;
"SizeOnDisk" = ($stat | ? { $_.Property -eq "PhysicalSize" }).Sum - $clusterSize;
}

Answer 2

You're going to have to accumulate your data in a custom object as you see each item:
$path = "C:\Users\aaron\Projects\Carbon"
$properties = New-Object PsObject -Property #{ 'Path' = $path; 'Files' = 0; 'Folders' = 0; 'Size' = 0 }
Get-ChildItem -Path $path -Recurse |
ForEach-Object {
if( $_.PsIsContainer )
{
$properties.Folders++
}
else
{
$properties.Size += $_.Length
$properties.Files++
}
}
$properties