New-UserShares.ps1

<#
.SYNOPSIS
    Create a new shared folder for each users in a group.
.DESCRIPTION
    The New-UserShares function will create a shared folder for each users from a specified group. 
.EXAMPLE
    C:\>.\New-UserShares -GroupName TEST_AD_GROUP -Directory D:\UserShares
    Creates a new shared folder in D:\UserShares for each member of TEST_AD_GROUP
.EXAMPLE
    C:\>.\New-UserShares -GroupName TEST_AD_GROUP
    Creates a new shared folder in the current directory for each member of TEST_AD_GROUP
.EXAMPLE
    C:\>.\New-UserShares -GroupName TEST_AD_GROUP -Directory D:\UserShares -logFile D:\scriptLogs\New-UserShares.log
    Creates a new shared folder in D:\UserShares for each member of TEST_AD_GROUP and outputs the log transcript to a .log file
#>

Param(
    #Group to select a list of users from.
    [Parameter(Mandatory=$True,Position=0)]
    [AllowEmptyString()]
    [string]$GroupName,
    #Directory that users folders will be created.
    [Parameter(Position=1)]
    [string]$Directory=".",
    #Logfile for transcript.
    [Parameter(Position=2)]
    [string]$logFile
)

if(!($GroupName)){
    Write-Output "ERROR: GroupName Parameter is Mandatory"
    Get-Help $PSCommandPath -Examples
    Write-Output "Run the below command for more information:`n Get-Help `"$PSCommandPath`" -Full"
    exit
}

$Directory = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($Directory)

function Get-GroupMembers($strGroupName){
    $objDomain = New-Object System.DirectoryServices.DirectoryEntry
    $objSearcher = New-Object System.DirectoryServices.DirectorySearcher
    $strFilter = "(&(objectCategory=Group)(name=" + $strGroupName + "))"
    $objSearcher.SearchRoot = $objDomain
    $objSearcher.PageSize = 1000
    $objSearcher.Filter = $strFilter
    $objSearcher.SearchScope = "Subtree"
    $colResults = $objSearcher.FindAll()
    return $colResults
}
function New-Directory($dirName){
    If (!(Test-Path -path $dirName)) {
        New-Item $dirName -type directory
    }
}

function New-LogFile($logFile){
    if($logFile){
        $logFile = $ExecutionContext.SessionState.Path.GetUnresolvedProviderPathFromPSPath($logFile)
        If (([IO.FileInfo]$logFile).Attributes -match 'Directory') {
            Write-Output "ERROR: The logFile specified is a directory"
            Get-Help $PSCommandPath -Examples
            exit
        }
        Start-Transcript $logFile
    }
}

function New-UserShares{
    $groupMembers = Get-GroupMembers($GroupName)
    $inherit = [system.security.accesscontrol.InheritanceFlags]"ContainerInherit, ObjectInherit"
    $prop    = [system.security.accesscontrol.PropagationFlags]"None"
    
    # Create Baseuser folder if it doesn't exist already
    New-Directory($Directory+"\baseuser")

    foreach ($objResult in $groupMembers)
    {
        $objGroup = $objResult.GetDirectoryEntry()
        $members = $objGroup.member
        
        foreach ($m in $members) {
            $username = $m.split(",")[0]
            $username=$username.replace("CN=","")
            $username 
            
            # Create RCS ID directory if it doesn't exist already
            New-Directory($Directory+"\"+$username)
    
            $acl = (Get-Item $Directory"\"baseuser).GetAccessControl('Access')
            $ar = New-Object system.security.accesscontrol.filesystemaccessrule( $username ,"Modify",$inherit, $prop, "Allow")
            $acl.SetAccessRule($ar)
            Set-Acl $Directory"\"$username $acl
    
            If (!(GET-WMIOBJECT Win32_Share -filter "name='$username$'")) {
                New-SmbShare -Name "$username$" -Path "$Directory\$username" -ChangeAccess Everyone
            }
    
        }
    }
}

New-LogFile $logFile
New-UserShares @args