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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>nmbd</title><link rel="stylesheet" href="samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.60.1"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="nmbd.8"></a><div class="titlepage"><div></div><div></div></div><div class="refnamediv"><h2>Name</h2><p>nmbd — NetBIOS name server to provide NetBIOS
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over IP naming services to clients</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><tt class="command">nmbd</tt> [-D] [-F] [-S] [-a] [-i] [-o] [-h] [-V] [-d <debug level>] [-H <lmhosts file>] [-l <log directory>] [-n <primary netbios name>] [-p <port number>] [-s <configuration file>]</p></div></div><div class="refsect1" lang="en"><h2>DESCRIPTION</h2><p>This program is part of the <a href="Samba.7.html"><span class="citerefentry"><span class="refentrytitle">Samba</span>(7)</span></a> suite.</p><p><b class="command">nmbd</b> is a server that understands
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and can reply to NetBIOS over IP name service requests, like
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those produced by SMB/CIFS clients such as Windows 95/98/ME,
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Windows NT, Windows 2000, Windows XP and LanManager clients. It also
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participates in the browsing protocols which make up the
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Windows "Network Neighborhood" view.</p><p>SMB/CIFS clients, when they start up, may wish to
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locate an SMB/CIFS server. That is, they wish to know what
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IP number a specified host is using.</p><p>Amongst other services, <b class="command">nmbd</b> will
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listen for such requests, and if its own NetBIOS name is
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specified it will respond with the IP number of the host it
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is running on. Its "own NetBIOS name" is by
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default the primary DNS name of the host it is running on,
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but this can be overridden with the <span class="emphasis"><em>-n</em></span>
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option (see OPTIONS below). Thus <b class="command">nmbd</b> will
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reply to broadcast queries for its own name(s). Additional
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names for <b class="command">nmbd</b> to respond on can be set
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via parameters in the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> configuration file.</p><p><b class="command">nmbd</b> can also be used as a WINS
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(Windows Internet Name Server) server. What this basically means
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is that it will act as a WINS database server, creating a
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database from name registration requests that it receives and
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replying to queries from clients for these names.</p><p>In addition, <b class="command">nmbd</b> can act as a WINS
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proxy, relaying broadcast queries from clients that do
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not understand how to talk the WINS protocol to a WINS
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server.</p></div><div class="refsect1" lang="en"><h2>OPTIONS</h2><div class="variablelist"><dl><dt><span class="term">-D</span></dt><dd><p>If specified, this parameter causes
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<b class="command">nmbd</b> to operate as a daemon. That is,
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it detaches itself and runs in the background, fielding
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requests on the appropriate port. By default, <b class="command">nmbd</b>
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will operate as a daemon if launched from a command shell.
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nmbd can also be operated from the <b class="command">inetd</b>
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meta-daemon, although this is not recommended.
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</p></dd><dt><span class="term">-F</span></dt><dd><p>If specified, this parameter causes
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the main <b class="command">nmbd</b> process to not daemonize,
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i.e. double-fork and disassociate with the terminal.
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Child processes are still created as normal to service
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each connection request, but the main process does not
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exit. This operation mode is suitable for running
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<b class="command">nmbd</b> under process supervisors such
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as <b class="command">supervise</b> and <b class="command">svscan</b>
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from Daniel J. Bernstein's <b class="command">daemontools</b>
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package, or the AIX process monitor.
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</p></dd><dt><span class="term">-S</span></dt><dd><p>If specified, this parameter causes
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<b class="command">nmbd</b> to log to standard output rather
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than a file.</p></dd><dt><span class="term">-i</span></dt><dd><p>If this parameter is specified it causes the
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server to run "interactively", not as a daemon, even if the
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server is executed on the command line of a shell. Setting this
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parameter negates the implicit daemon mode when run from the
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command line. <b class="command">nmbd</b> also logs to standard
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output, as if the <tt class="constant">-S</tt> parameter had been
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given. </p></dd><dt><span class="term">-h|--help</span></dt><dd><p>Print a summary of command line options.
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</p></dd><dt><span class="term">-H <filename></span></dt><dd><p>NetBIOS lmhosts file. The lmhosts
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file is a list of NetBIOS names to IP addresses that
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is loaded by the nmbd server and used via the name
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resolution mechanism <a href="smb.conf.5.html#nameresolveorder" target="_top"><i class="parameter"><tt>name resolve
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order</tt></i></a> described in <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> to resolve any
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NetBIOS name queries needed by the server. Note
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that the contents of this file are <span class="emphasis"><em>NOT</em></span>
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used by <b class="command">nmbd</b> to answer any name queries.
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Adding a line to this file affects name NetBIOS resolution
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from this host <span class="emphasis"><em>ONLY</em></span>.</p><p>The default path to this file is compiled into
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Samba as part of the build process. Common defaults
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are <tt class="filename">/usr/local/samba/lib/lmhosts</tt>,
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<tt class="filename">/usr/samba/lib/lmhosts</tt> or
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<tt class="filename">/etc/samba/lmhosts</tt>. See the <a href="lmhosts.5.html"><span class="citerefentry"><span class="refentrytitle">lmhosts</span>(5)</span></a> man page for details on the contents of this file.</p></dd><dt><span class="term">-V</span></dt><dd><p>Prints the version number for
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<b class="command">smbd</b>.</p></dd><dt><span class="term">-s <configuration file></span></dt><dd><p>The file specified contains the
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configuration details required by the server. The
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information in this file includes server-specific
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information such as what printcap file to use, as well
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as descriptions of all the services that the server is
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to provide. See <a href="smb.conf.5.html" target="_top"><tt class="filename">
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smb.conf(5)</tt></a> for more information.
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The default configuration file name is determined at
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compile time.</p></dd><dt><span class="term">-d|--debug=debuglevel</span></dt><dd><p><i class="replaceable"><tt>debuglevel</tt></i> is an integer
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from 0 to 10. The default value if this parameter is
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not specified is zero.</p><p>The higher this value, the more detail will be
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logged to the log files about the activities of the
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server. At level 0, only critical errors and serious
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warnings will be logged. Level 1 is a reasonable level for
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day to day running - it generates a small amount of
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information about operations carried out.</p><p>Levels above 1 will generate considerable
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amounts of log data, and should only be used when
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investigating a problem. Levels above 3 are designed for
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use only by developers and generate HUGE amounts of log
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data, most of which is extremely cryptic.</p><p>Note that specifying this parameter here will
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override the <a href="smb.conf.5.html#loglevel" target="_top">log
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level</a> parameter in the <a href="smb.conf.5.html" target="_top">
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<tt class="filename">smb.conf(5)</tt></a> file.</p></dd><dt><span class="term">-l|--logfile=logbasename</span></dt><dd><p>File name for log/debug files. The extension
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<tt class="constant">".client"</tt> will be appended. The log file is
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never removed by the client.
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</p></dd><dt><span class="term">-p <UDP port number></span></dt><dd><p>UDP port number is a positive integer value.
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This option changes the default UDP port number (normally 137)
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that <b class="command">nmbd</b> responds to name queries on. Don't
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use this option unless you are an expert, in which case you
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won't need help!</p></dd></dl></div></div><div class="refsect1" lang="en"><h2>FILES</h2><div class="variablelist"><dl><dt><span class="term"><tt class="filename">/etc/inetd.conf</tt></span></dt><dd><p>If the server is to be run by the
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<b class="command">inetd</b> meta-daemon, this file
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must contain suitable startup information for the
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meta-daemon. See the <a href="install.html" target="_top">install</a> document
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for details.
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</p></dd><dt><span class="term"><tt class="filename">/etc/rc</tt></span></dt><dd><p>or whatever initialization script your
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system uses).</p><p>If running the server as a daemon at startup,
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this file will need to contain an appropriate startup
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sequence for the server. See the <a href="install.html" target="_top">"How to Install and Test SAMBA"</a> document
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for details.</p></dd><dt><span class="term"><tt class="filename">/etc/services</tt></span></dt><dd><p>If running the server via the
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meta-daemon <b class="command">inetd</b>, this file
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must contain a mapping of service name (e.g., netbios-ssn)
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to service port (e.g., 139) and protocol type (e.g., tcp).
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See the <a href="install.html" target="_top">"How to Install and Test SAMBA"</a>
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document for details.</p></dd><dt><span class="term"><tt class="filename">/usr/local/samba/lib/smb.conf</tt></span></dt><dd><p>This is the default location of
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the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> server
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configuration file. Other common places that systems
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install this file are <tt class="filename">/usr/samba/lib/smb.conf</tt>
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and <tt class="filename">/etc/samba/smb.conf</tt>.</p><p>When run as a WINS server (see the
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<a href="smb.conf.5.html#WINSSUPPORT" target="_top"><tt class="constant">wins support</tt></a>
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parameter in the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> man page),
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<b class="command">nmbd</b>
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will store the WINS database in the file <tt class="filename">wins.dat</tt>
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in the <tt class="filename">var/locks</tt> directory configured under
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wherever Samba was configured to install itself.</p><p>If <b class="command">nmbd</b> is acting as a <span class="emphasis"><em>
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browse master</em></span> (see the <a href="smb.conf.5.html#LOCALMASTER" target="_top"><tt class="constant">local master</tt></a>
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parameter in the <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a> man page, <b class="command">nmbd</b>
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will store the browsing database in the file <tt class="filename">browse.dat
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</tt> in the <tt class="filename">var/locks</tt> directory
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configured under wherever Samba was configured to install itself.
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</p></dd></dl></div></div><div class="refsect1" lang="en"><h2>SIGNALS</h2><p>To shut down an <b class="command">nmbd</b> process it is recommended
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that SIGKILL (-9) <span class="emphasis"><em>NOT</em></span> be used, except as a last
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resort, as this may leave the name database in an inconsistent state.
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The correct way to terminate <b class="command">nmbd</b> is to send it
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a SIGTERM (-15) signal and wait for it to die on its own.</p><p><b class="command">nmbd</b> will accept SIGHUP, which will cause
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it to dump out its namelists into the file <tt class="filename">namelist.debug
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</tt> in the <tt class="filename">/usr/local/samba/var/locks</tt>
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directory (or the <tt class="filename">var/locks</tt> directory configured
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under wherever Samba was configured to install itself). This will also
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cause <b class="command">nmbd</b> to dump out its server database in
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the <tt class="filename">log.nmb</tt> file.</p><p>The debug log level of nmbd may be raised or lowered
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using <a href="smbcontrol.1.html"><span class="citerefentry"><span class="refentrytitle">smbcontrol</span>(1)</span></a> (SIGUSR[1|2] signals
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are no longer used since Samba 2.2). This is to allow
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transient problems to be diagnosed, whilst still running
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at a normally low log level.</p></div><div class="refsect1" lang="en"><h2>VERSION</h2><p>This man page is correct for version 3.0 of
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the Samba suite.</p></div><div class="refsect1" lang="en"><h2>SEE ALSO</h2><p>
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<a href="inetd.8.html"><span class="citerefentry"><span class="refentrytitle">inetd</span>(8)</span></a>, <a href="smbd.8.html"><span class="citerefentry"><span class="refentrytitle">smbd</span>(8)</span></a>, <a href="smb.conf.5.html"><span class="citerefentry"><span class="refentrytitle">smb.conf</span>(5)</span></a>, <a href="smbclient.1.html"><span class="citerefentry"><span class="refentrytitle">smbclient</span>(1)</span></a>, <a href="testparm.1.html"><span class="citerefentry"><span class="refentrytitle">testparm</span>(1)</span></a>, <a href="testprns.1.html"><span class="citerefentry"><span class="refentrytitle">testprns</span>(1)</span></a>, and the Internet
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RFC's <tt class="filename">rfc1001.txt</tt>, <tt class="filename">rfc1002.txt</tt>.
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In addition the CIFS (formerly SMB) specification is available
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as a link from the Web page <a href="http://samba.org/cifs/" target="_top">
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http://samba.org/cifs/</a>.</p></div><div class="refsect1" lang="en"><h2>AUTHOR</h2><p>The original Samba software and related utilities
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were created by Andrew Tridgell. Samba is now developed
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by the Samba Team as an Open Source project similar
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to the way the Linux kernel is developed.</p><p>The original Samba man pages were written by Karl Auer.
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The man page sources were converted to YODL format (another
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excellent piece of Open Source software, available at <a href="ftp://ftp.icce.rug.nl/pub/unix/" target="_top">
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ftp://ftp.icce.rug.nl/pub/unix/</a>) and updated for the Samba 2.0
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release by Jeremy Allison. The conversion to DocBook for
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Samba 2.2 was done by Gerald Carter. The conversion to DocBook
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XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.</p></div></div></body></html>
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