\section{\module{nis} ---         Interface to Sun's NIS (Yellow Pages)} \declaremodule{extension}{nis}  \platform{UNIX}\moduleauthor{Fred Gansevles}{Fred.Gansevles@cs.utwente.nl}\sectionauthor{Moshe Zadka}{moshez@zadka.site.co.il}\modulesynopsis{Interface to Sun's NIS (Yellow Pages) library.} The \module{nis} module gives a thin wrapper around the NIS library, usefulfor central administration of several hosts. Because NIS exists only on \UNIX{} systems, this module isonly available for \UNIX. The \module{nis} module defines the following functions: \begin{funcdesc}{match}{key, mapname[, domain=default_domain]}Return the match for \var{key} in map \var{mapname}, or raise anerror (\exception{nis.error}) if there is none.Both should be strings, \var{key} is 8-bit clean.Return value is an arbitrary array of bytes (may contain \code{NULL}and other joys). Note that \var{mapname} is first checked if it is an alias to anothername. \versionchanged[The \var{domain} argument allows to overridethe NIS domain used for the lookup. If unspecified, lookup is in thedefault NIS domain]{2.5}\end{funcdesc} \begin{funcdesc}{cat}{mapname[, domain=default_domain]}Return a dictionary mapping \var{key} to \var{value} such that\code{match(\var{key}, \var{mapname})==\var{value}}.Note that both keys and values of the dictionary are arbitraryarrays of bytes. Note that \var{mapname} is first checked if it is an alias to anothername. \versionchanged[The \var{domain} argument allows to overridethe NIS domain used for the lookup. If unspecified, lookup is in thedefault NIS domain]{2.5}\end{funcdesc}  \begin{funcdesc}{maps}{[domain=default_domain]}Return a list of all valid maps. \versionchanged[The \var{domain} argument allows to overridethe NIS domain used for the lookup. If unspecified, lookup is in thedefault NIS domain]{2.5}\end{funcdesc}  \begin{funcdesc}{get_default_domain}{}Return the system default NIS domain. \versionadded{2.5}\end{funcdesc} The \module{nis} module defines the following exception: \begin{excdesc}{error}An error raised when a NIS function returns an error code.\end{excdesc}