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<H1><A NAME="SECTION00101600000000000000000">
8.16 <tt class="module">nis</tt> --
         Interface to Sun's NIS (Yellow Pages)</A>
</H1>

<P>
  
<p class='availability'>Availability: <span
 class='platform'>UNIX</span>.</p>

<P>
The <tt class="module">nis</tt> module gives a thin wrapper around the NIS library, useful
for central administration of several hosts.

<P>
Because NIS exists only on Unix systems, this module is
only available for Unix.

<P>
The <tt class="module">nis</tt> module defines the following functions:

<P>
<dl><dt><b><a name='l2h-1923'><tt class='function'>match</tt></a></b> (<var>key, mapname</var>)
<dd>
Return the match for <var>key</var> in map <var>mapname</var>, or raise an
error (<tt class="exception">nis.error</tt>) if there is none.
Both should be strings, <var>key</var> is 8-bit clean.
Return value is an arbitrary array of bytes (i.e., may contain <code>NULL</code>
and other joys).

<P>
Note that <var>mapname</var> is first checked if it is an alias to another name.
</dl>

<P>
<dl><dt><b><a name='l2h-1924'><tt class='function'>cat</tt></a></b> (<var>mapname</var>)
<dd>
Return a dictionary mapping <var>key</var> to <var>value</var> such that
<code>match(<var>key</var>, <var>mapname</var>)==<var>value</var></code>.
Note that both keys and values of the dictionary are arbitrary
arrays of bytes.

<P>
Note that <var>mapname</var> is first checked if it is an alias to another name.
</dl>

<P>
<dl><dt><b><a name='l2h-1925'><tt class='function'>maps</tt></a></b> ()
<dd>
Return a list of all valid maps.
</dl>

<P>
The <tt class="module">nis</tt> module defines the following exception:

<P>
<dl><dt><b><a name='l2h-1926'><tt class='exception'>error</tt></a></b>
<dd>
An error raised when a NIS function returns an error code.
</dl>

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