Counting files per owner

Question

Using PowerShell how can I count the number of files that each owner has modified in the last 45 days?

This is how I am able to get counts by extension in the last 45 days:

gci -Recurse| where {$_.LastWriteTime -gt (Get-Date).AddDays(-45)}| group Extension -NoElement

Instead of grouping by extension, I would like to group and count by owner. Thank you for your guidance!

Please note that this is counting through an entire directory structure

Answer 1

gci -recurse | where {$_.LastWriteTime -gt (Get-Date).AddDays(-45)} | % { get-acl $_ } | group Owner -NoElement

Will get you all the permissions, grouped by owner. Just remove the last pipe if you want them ungrouped.

i.e:

gci -recurse | where {$_.LastWriteTime -gt (Get-Date).AddDays(-45)} | % { get-acl $_ }