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<tr><td valign="middle" align="left">[<a href="avrdude_6.html#Terminal-Mode-Operation" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
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<td valign="middle" align="left"> &nbsp; </td>
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<a name="Configuration-File-1"></a>
<h1 class="chapter">4 Configuration File</h1>
<p>AVRDUDE reads a configuration file upon startup which describes all of
the parts and programmers that it knows about. The advantage of this is
that if you have a chip that is not currently supported by AVRDUDE, you
can add it to the configuration file without waiting for a new release
of AVRDUDE. Likewise, if you have a parallel port programmer that is
not supported by AVRDUDE, chances are good that you can copy and
existing programmer definition, and with only a few changes, make your
programmer work with AVRDUDE.
</p>
<p>AVRDUDE first looks for a system wide configuration file in a platform
dependent location. On Unix, this is usually
<code>/usr/local/etc/avrdude.conf</code>, while on Windows it is usually in the
same location as the executable file. The name of this file can be
changed using the &lsquo;<samp>-C</samp>&rsquo; command line option. After the system wide
configuration file is parsed, AVRDUDE looks for a per-user configuration
file to augment or override the system wide defaults. On Unix, the
per-user file is <code>.avrduderc</code> within the user&rsquo;s home directory. On
Windows, this file is the <code>avrdude.rc</code> file located in the same
directory as the executable.
</p>
<table class="menu" border="0" cellspacing="0">
<tr><td align="left" valign="top"><a href="avrdude_10.html#AVRDUDE-Defaults">4.1 AVRDUDE Defaults</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top"><a href="avrdude_11.html#Programmer-Definitions">4.2 Programmer Definitions</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
<tr><td align="left" valign="top"><a href="avrdude_12.html#Part-Definitions">4.3 Part Definitions</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
</td></tr>
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<tr><td align="left" valign="top"><a href="avrdude_15.html#Other-Notes">4.4 Other Notes</a></td><td>&nbsp;&nbsp;</td><td align="left" valign="top">
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</td></tr>
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<table class="header" cellpadding="1" cellspacing="1" border="0">
<tr><td valign="middle" align="left">[<a href="avrdude_6.html#Terminal-Mode-Operation" title="Beginning of this chapter or previous chapter"> &lt;&lt; </a>]</td>
<td valign="middle" align="left">[<a href="avrdude_8.html#Terminal-Mode-Examples" title="Previous section in reading order"> &lt; </a>]</td>
<td valign="middle" align="left">[ Up ]</td>
<td valign="middle" align="left">[<a href="avrdude_10.html#AVRDUDE-Defaults" title="Next section in reading order"> &gt; </a>]</td>
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<td valign="middle" align="left">[<a href="avrdude_16.html#Programmer-Specific-Information" title="Next chapter"> &gt;&gt; </a>]</td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left"> &nbsp; </td>
<td valign="middle" align="left">[<a href="avrdude.html#Introduction" title="Cover (top) of document">Top</a>]</td>
<td valign="middle" align="left">[<a href="avrdude_toc.html#SEC_Contents" title="Table of contents">Contents</a>]</td>
<td valign="middle" align="left">[Index]</td>
<td valign="middle" align="left">[<a href="avrdude_abt.html#SEC_About" title="About (help)"> ? </a>]</td>
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