Here's a simple filter that will show only those files and folders that a specific user is owner of:
filter Get-Owner ($Account="$env:UserDomain\$env:USerName") { if ((Get-ACL $_.Fullname).Owner -like $Account) { $_ } }
It is very easy to use. By default, it checks for files and folders owned by you:
PS> Dir $home | Get-Owner
You can specify a specific user name (including domain part) or use wildcards as well:
PS> Dir $home | Get-Owner *system*