Add/remove sharepoint group using power shell Content from http://vimleshtiwari.blogspot.com/2011/01/addremove-sharepoint-group-using-power.html #Add a sharepoint group using power shell#Create a sharepoint custom permission using Power shell$web = get-SPWeb “http://sitecollectionName” $member = $web.AllUsers[“domain\username”] $CustomPermission =”Permission Name” $CustomRoleRoledef = New-Object “Microsoft.SharePoint.SPRoleDefinition” $CustomRoleRoledef.Name = “$CustomPermission” $CustomRoleRoledef.Description = “Custom permission level for Site Owners” $CustomRoleRoledef.BasePermissions = “CancelCheckout,AddListItems,EditListItems,DeleteListItems,ViewListItems,OpenItems,ViewVersions, DeleteVersions,CreateAlerts,ViewFormPages,ViewUsageData,ViewPages,BrowseUserInfo,ManageAlerts, UseRemoteAPIs,UseClientIntegration,Open” $web.RoleDefinitions.Add($CustomRoleRoledef) $web.Update() # Create…