yptools: yptools (NIS servers and clients) yptools: yptools: NIS stands for Network Information Service. NIS is usually used to yptools: provide /etc/passwd and /etc/group information throughout the network. yptools: Most Sun-based networks run NIS, and Linux machines can take full yptools: advantage of existing NIS service or provide NIS service themselves. yptools: yptools: yptools: yptools: yptools: