Powershell get total size of files which user owns - powershell

Question

I need a powershell script, which will go through all users in system and will find total size of all files which any user own... I have script which is going through all users, but then I've no idea to continue with counting total size which user owns for each user
Here is a script, which I`ve now:
$users = Get-WmiObject -class Win32_UserAccount
foreach($user in $users) {
$name = $user.Name
$fullName = $user.FullName;
if(Test-Path "C:\Users\$name") {
$path = "C:\Users\$name"
} else {
$path = "C:\Users\Public"
}
$dirSize = (Get-ChildItem $path -recurse | Measure-Object -property length -sum)
"{0:N2}" -f ($dirSize.sum / 1Gb) + " Gb"
echo "$dirSize"
Add-Content -path "pathototxt..." -value "$name $fullName $path"
}
I would be more than happy If somebody know the answer and tell me it...
Thank you

Answer 1

If there's a lot of files, you might want to consider:
$oSIDs = #{}
get-childitem <filespec> |
foreach {
$oSID = $_.GetAccessControl().Sddl -replace '^o:(.+?).:.+','$1'
$oSIDs[$oSID] += $_.length
}
Then resolve the SIDs when you're done. Parsing the owner SID or well-know security principal ID from the SDDL string saves the provider from having to do a lot of repetitive name resolution to give you back the "friendly" names.

Answer 2

I have no idea what you're asking for here.
"to continue with counting total size which user owns for each user". huh? Do want to check every file on the system or just the userfolder as you currently do?
Your script works fine if you just tweak it to include the filesize in the output. Personally I'd consider using a csv to store this because not all users will have e.g. a full name(admin, guest etc.). Also, atm. your script is counting the public folder multiple times(each time a user doesn't have a profile). E.g. admin(if it has never logged in), guest etc. might both get it specified.
Updated script that outputs both textfile and csv
$users = Get-WmiObject -class Win32_UserAccount
$out = #()
#If you want to append to a csv-file, replace the $out line above with the one below
#$out = Import-Csv "file.csv"
foreach($user in $users) {
$name = $user.Name
$fullName = $user.FullName;
if(Test-Path "C:\Users\$name") {
$path = "C:\Users\$name"
} else {
$path = "C:\Users\Public"
}
$dirSize = (Get-ChildItem $path -Recurse -ErrorAction SilentlyContinue | ? { !$_.PSIsContainer } | Measure-Object -Property Length -Sum)
$size = "{0:N2}" -f ($dirSize.Sum / 1Gb) + " Gb"
#Saving as textfile
#Add-Content -path "pathototxt..." -value "$name $fullName $path $size"
Add-Content -path "file.txt" -value "$name $fullName $path $size"
#CSV-way
$o = New-Object psobject -Property #{
Name = $name
FullName = $fullName
Path = $path
Size = $size
}
$out += $o
}
#Exporting to csv format
$out | Export-Csv "file.csv" -NoTypeInformation
EDIT: Another solution using the answer provided by #mjolinor and #C.B. modified to scan your c:\ drive while excluding some "rootfolders" like "program files", "windows" etc. It exports the result to a csv file ready for Excel.:
$oSIDs = #{}
$exclude = #("Program Files", "Program Files (x86)", "Windows", "Perflogs");
Get-ChildItem C:\ | ? { $exclude -notcontains $_.Name } | % { Get-ChildItem $_.FullName -Recurse -ErrorAction SilentlyContinue | ? { !$_.PSIsContainer } } | % {
$oSID = $_.GetAccessControl().Sddl -replace '^o:(.+?).:.+','$1'
$oSIDs[$oSID] += $_.Length
}
$out = #()
$oSIDs.GetEnumerator() | % {
$user = (New-Object System.Security.Principal.SecurityIdentifier($_.Key)).Translate([System.Security.Principal.NTAccount]).Value
$out += New-Object psobject -Property #{
User = if($user) { $user } else { $_.Key }
"Size(GB)" = $oSIDs[$_.Key]/1GB
}
}
$out | Export-Csv file.csv -NoTypeInformation -Delimiter ";"