help to improve the scrip by adding params

Help me to improve the script by adding param or variables or function. Or perhaps it is OK like that.

So, I have this script which is working. However, I would like to make it more professional and add some param or function to it. So, i tried adding param for group that I want to filter by "TESTSOURCE\DOMAIN Users". As soon as I add param, it doesn't work. Please let me know.

    [String]$Group='Domain Users',

Get-ChildItem $directory -Recurse | ?{ $_.PsIsContainer } | %{
$Path = $_.FullName
 (Get-Acl $Path).Access | Select-Object `
    @{n='Path';e={ $Path }}, IdentityReference, AccessControlType, `
    InheritanceFlags, PropagationFlags, FileSystemRights, IsInherited| ?{$_.identityreference.value.ToString() -like $Group}
} | Export-CSV "PermissionsDomainUsers9b.csv"

i get an error:

Get-ChildItem : Access to the path 'C:\Windows\System32\LogFiles\WMI\RtBackup' is denied.
At line:7 char:1
+ Get-ChildItem $directory -Recurse | ?{ $_.PsIsContainer } | %{
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : PermissionDenied: (C:\Windows\\WMI\RtBackup:String) [Get-ChildItem], UnauthorizedAccessException
    + FullyQualifiedErrorId : DirUnauthorizedAccessError,Microsoft.PowerShell.Commands.GetChildItemCommand
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rastoiWindows DTS expertCommented:
Hello Creative,

I already answered you under your script question.
With $Directory are pointing into invalid/nonexisting directory "C:\install" and for using -like operator you have to prefix "Domain users" in $Group with an asterix "* Domain Users"

you can check/validate this by adding
if (test-path $directory) {
write-host "intended root folder not exist"

Open in new window

after params section. if you made typo in $directory script will write information and ends

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creative555Author Commented:
Brilliant!! YEs. I mistyped the directory name and that is why it was failing....thanks a lot!!!
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