gci 和 gci -recurse 有不同类型的输出

Question

I'm trying to make a filesystem inventory.

This works, it gives me the ower and ACL of each entry

Get-ChildItem \\Server\Share\* |  Select-Object @{n='Path';e={ (Get-Item $_.PSPath).FullName }}, PSIsContainer, @{n='Owner';e={ (Get-Acl $_).Owner}}, @{n='Accesstostring';e={ (Get-Acl $_).Accesstostring}}

But using -Recurse gives me empty Owner and Accesstostring

Get-ChildItem \\Server\Share\ -Recurse |  Select-Object @{n='Path';e={ (Get-Item $_.PSPath).FullName }}, PSIsContainer, @{n='Owner';e={ (Get-Acl $_).Owner}}, @{n='Accesstostring';e={ (Get-Acl $_).Accesstostring}}

Why does gci is sending something different alon the pipe ? How can i fix this ? (I don't want to make an array because that would not fit into memory)

Answer 1

They are different because one array contains a list of files, but in recurse it is an array of directory objects and each of the directory object contains a list of files. The code below will do what you wanted. Please note that path needs to be in quotes if it contains spaces.

Get-ChildItem \\Server\Share\ -Recurse | Select-Object @{n='Path';e={ $_.FullName }}, PSIsContainer, @{n='Owner';e={ (Get-Acl $_.FullName).Owner}}, @{n='Accesstostring';e={ (Get-Acl $_.FullName).Accesstostring}}

Answer 2

Expanding on @Edjs-perkums answer , this calls Get-Acl once and expands two of its properties in a second Select-Object in the pipe. (Also reformatted into multiple lines for clarity, but it's a single pipeline.)

Get-ChildItem \\Server\Share\ -Recurse `
    | Select-Object @{n='Path';e={ $_.FullName }}, 
                    @{n='ACL';e={ (Get-Acl $_.Fullname) }},
                    PSIsContainer `
    | Select-Object Path, PSIsContainer, 
                    @{n='Owner';e={ $_.ACL.Owner}}, 
                    @{n='Accesstostring';e={ $_.ACL.Accesstostring}}