Assign permisions from Power Shell

Question

I'm trying to modify the permission of a library through Power Shell.

What I want to do is:

1. I have a library with one folder for each user, but now, all this folders inherite the permissions from the library.

2. All my Sharepoint users are Active Directory users.

3. Each user has a folder with his Full Name as folder name. I want to break inherite in all folders and give read permission to the appropiate user (folder name = ad user name)

Have I explained it right?

Answer 1

You can try with below script, here for group you can user your user:

function GrantUserpermission($userName)
 {
  [Microsoft.SharePoint.SPUserCollection]$spusers=[Microsoft.SharePoint.SPUserCollection]$web.SiteUsers
  [Microsoft.SharePoint.SPUser]$spuser=$spusers[$userName]
if ($userName -ne $null)

{
  $sproleass=new-object Microsoft.SharePoint.SPRoleAssignment([Microsoft.SharePoint.SPPrincipal]$spuser)
  $folder.BreakRoleInheritance("true")
  $sproleass.RoleDefinitionBindings.Add($web.RoleDefinitions["Contribute"])
  $folder.RoleAssignments.Add($sproleass);
  Write-Host "Permission provided for user ", $userName
}
else
{
 Write-Host "User ""$userName"" was not found in this web!"

}

Check this below link for whole script: http://sharepoint2010tutor.blogspot.in/2011/08/grant-folder-permissionsharepoint-using.html