The fncopy command handles the FNS-related aspects of changing your underlying enterprise-level naming service from files to NIS or NIS+. This command copies and converts files-based FNS contexts to NIS or NIS+ based contexts.
| fncopy [-i oldsvc -o newsvc] [-f filename] oldctx newctx | 
For example, to copy the contexts listed in the file /etc/host_list to the doc.com domain of an NIS+ naming service, you would enter:
| fncopy -i files -o nisplus -f /etc/host_list //doc.com/host |