Hi, I currently have Sharepoint Portal 2003 & WSS 2.0.

I am working on a script that will:

a) enumerate the permissions on all document libraires on a group of sites (site names will be read from a text file)
b) modify permissions for all document libraries in the same group of sites

At the moment I can list the document libraries and the users and their permissions with the following code but I am getting very stuck with changing the permissions to give everyone read only permissions or even removing the users from the document library together.

Here is what I have at the moment:

## loads Sharepoint assembly
[System.reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint")

#sets site to work with
$siteurl = "http://test"

#creates mysite object / variable
$mysite=new-object Microsoft.Sharepoint.SPSite($siteurl)

#creates siteweb object / variable
$siteweb = $mysite.OpenWeb();
$listsnew = $siteweb.Lists
$doclibs = $siteweb.Folders | where {$_.ContainingDocumentLibrary -ne "00000000-0000-0000-0000-000000000000"}

foreach ($lib in ($doclibs | where {$_.name -eq "My test"})){
        Write-Host $siteurl $siteweb
        Write-Host "Document Library: " $lib.name
        $mylist = $siteweb.Lists[$lib]
        $mylist.Permissions
}