Power Shell script which runs on all the root folders of a document library and set unique permsion to all users to have read-only

Question

We have an online document library which contains around 1000 root folders, and we want to run a Power Shell script which runs on the 1000 root folders ONLY (without the sub-folders) >> then set unique permissions on the roots folders >> get the current permissions Groups + Users >> grant them Read-Only.

Can anyone advice on such a Script ?

I have the following:-

#Parameters  
$SiteURL="https://******.sharepoint.com/"  
$FolderSiteRelativeURL = "/Shared Documents/"  
   
#Connect to the Site collection  
Connect-PnPOnline -URL $SiteURL -UseWebLogin  
   
#Get the Folder from site relative URL  
$Folder = Get-PnPFolder -Url $FolderSiteRelativeURL  
   
#Get all Subfolders of a folder - recursively  
$SubFolders = Get-PnPFolderItem -FolderSiteRelativeUrl $FolderSiteRelativeURL -ItemType Folder -Recursive  
  
ForEach($SubFolder in $SubFolders)  
    {  
If($SubFolder.ListItemAllFields.HasUniqueRoleAssignments)  
{  
    Write-host "Folder is already with broken permissions!" -f Yellow  
}  
Else  
{  
    #Break Folder permissions - keep all existing permissions & keep Item level permissions  
    $SubFolder.ListItemAllFields.BreakRoleInheritance($True,$True)  
    Invoke-PnPQuery  
   
    Write-host "Folder's Permission Inheritance is broken!!" -f Green     
   /// Need the code which goes here......................  
}  
    }  

To get all the root folders, but how i can get the list of permissions assigned to the folder, and set its permission level to Read instead of Edit, Contribute or full access?

Thanks

Thanks

Answer 1

Hi @john john ,

Please refer to the following articles, first get all root folders from the library, and then cycle inside to change the user's permissions.

#Grant folder permissions to SharePoint Group  
Set-PnPfolderPermission -List $ListName -identity $FolderServerRelativeURL -AddRole "Read" -Group "<group name>"  

References to third-party article:
Set Folder Permissions using PowerShell
PowerShell to Get Folder Permissions
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