Difference between -include and -filter in get-childitem
powershell
Solution
`Filter` parameter is implemented by provider. It is efficient because applies when retrieving the objects. Get-PSprovider commandlet shows providers that implement 'filter' parameter. For example, there are only two providers on my system:ActiveDirectory and FileSystem
`Include` parameter is implemented by Powershell. It only works in conjunction with `Recurse` parameter (as MSDN describes here).
It's interesting that:
get-childitem -path Desktop\Extras\ -include *.txt
returns nothing
get-childitem -path Desktop\Extras\* -include *.txt
returns list of *.txt files
Maybe these are just nuances of the implementation.
Also see this excellent blog post: http://tfl09.blogspot.com/2012/02/get-childitem-and-theinclude-and-filter.html
Problem
Can someone please explain the difference between `-Include` and `-Filter` options in the `Get-ChildItem` command . Below are the two pieces of code that I am trying to execute . They both serve to find out the text files in a particular directory: ``` PS C:\Users\352997> get-childitem -path Desktop\Extras -filter *.txt Directory: C:\Users\352997\Desktop\Extras Mode LastWriteTime Length Name ---- ------------- ------ ---- -a--- 12/22/2014 4:05 PM 140 Expense_report.txt -a--- 1/14/2015 4:41 PM 211 Extras.txt -a--- 2/10/2015 2:46 PM 259 Learn Dutch.txt PS C:\Users\352997> get-childitem -path Desktop\Extras -include *.txt ``` --The above command produces no result ----