Perhaps other might find this useful.  I'm using it to update SL machines.

-- 
Orion Poplawski
Manager of NWRA Technical Systems          720-772-5637
NWRA, Boulder/CoRA Office             FAX: 303-415-9702
3380 Mitchell Lane                       [log in to unmask]
Boulder, CO 80301                 https://urldefense.proofpoint.com/v2/url?u=https-3A__www.nwra.com_&d=DwICaQ&c=gRgGjJ3BkIsb5y6s49QqsA&r=gd8BzeSQcySVxr0gDWSEbN-P-pgDXkdyCtaMqdCgPPdW1cyL5RIpaIYrCn8C5x2A&m=xxpKxxHU-BcBo4xZ080YcpBdRnfGhzZ6q_hwc3ksN7k&s=D9K--yjoDCjyybHBGdr9zueueYKVBPsx0l-LaJXiTzU&e=