Ceefax is a revamped version of Ceefax for the Raspberry Pi computer introduced in August 2016 by Peter Kwan. To view Teefax, enthusiasts connect a Raspberry Pi running appropriate software to the signal input of a Teletext-capable TV. Kwan said: “It's like the modern-day equivalent of restoring steam engines. It's completely useless but it keeps us occupied." The service has 12 pages of up-to-date news and Kwan hopes to create an online archive of old teletext pages from Britain, Germany and France. Ceefax Ceefax was the world's first teletext information service and a forerunner to the current BBC Red Button service.
Network Information Service some functionssuch as the distribution of netmask information to clients, as well as the maintenance of e-mail aliasesmay still be performed by NIS or LDAP. NIS maintains an NFS database information file as well as so called maps. Network Information Service The Network Information Service, or NIS (originally called Yellow Pages or YP), is a client–server directory service protocol for distributing system configuration data such as user and host names between computers on a computer network. Sun Microsystems developed the NIS; the technology is licensed to virtually all other Unix vendors. Because British Telecom PLC owned the name "Yellow Pages"