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<h3 class="section">37.3 Administrating Packages</h3>
<p>On UNIX-like systems it is possible to make both per-user and
system-wide installations of a package. If the user performing the
installation is <code>root</code> the packages will be installed in a
system-wide directory that defaults to
<samp><span class="file">OCTAVE_HOME/share/octave/packages/</span></samp>. If the user is not
<code>root</code> the default installation directory is
<samp><span class="file">~/octave/</span></samp>. Packages will be installed in a subdirectory of the
installation directory that will be named after the package. It is
possible to change the installation directory by using the
<code>pkg prefix</code> command
<pre class="example"> pkg prefix new_installation_directory
</pre>
<p class="noindent">The current installation directory can be retrieved by typing
<pre class="example"> current_installation_directory = pkg prefix
</pre>
<p>To function properly the package manager needs to keep some
information about the installed packages. For per-user packages this
information is by default stored in the file <samp><span class="file">~/.octave_packages</span></samp>
and for system-wide installations it is stored in
<samp><span class="file">OCTAVE_HOME/share/octave/octave_packages</span></samp>. The path to the
per-user file can be changed with the <code>pkg local_list</code> command
<pre class="example"> pkg local_list /path/to/new_file
</pre>
<p class="noindent">For system-wide installations this can be changed in the same way
using the <code>pkg global_list</code> command. If these commands are
called without a new path, the current path will be returned.
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