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Next: <a href="Moving-on.html#Moving-on" accesskey="n" rel="next">Moving on</a>, Previous: <a href="Loading-a-system.html#Loading-a-system" accesskey="p" rel="prev">Loading a system</a>, Up: <a href="Using-ASDF.html#Using-ASDF" accesskey="u" rel="up">Using ASDF</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Other-Operations-1"></a>
<h3 class="section">5.2 Other Operations</h3>

<a name="index-load_002dsystem"></a>
<a name="index-compile_002dsystem"></a>
<a name="index-test_002dsystem"></a>
<a name="index-requrie_002dsystem"></a>

<p>ASDF provides three commands for the most common system operations:
<code>load-system</code>, <code>compile-system</code>, and <code>test-system</code>.
It also provides <code>require-system</code>, a version of <code>load-system</code>
that skips trying to update systems that are already loaded.
</p>

<a name="index-operate"></a>
<a name="index-oos"></a>

<p>Because ASDF is an extensible system
for defining <em>operations</em> on <em>components</em>,
it also provides a generic function <code>operate</code>
(which is usually abbreviated by <code>oos</code>,
which stands for operate-on-system).
You&rsquo;ll use <code>oos</code> whenever you want to do something beyond
compiling, loading and testing.
</p>
<p>Output from ASDF and ASDF extensions are sent
to the CL stream <code>*standard-output*</code>,
so rebinding that stream around calls to <code>asdf:operate</code>
should redirect all output from ASDF operations.
</p>


<a name="index-already_002dloaded_002dsystems"></a>
<a name="index-require_002dsystem"></a>
<a name="index-load_002dsystem-1"></a>
<a name="index-_002aload_002dsystem_002doperation_002a"></a>
<p>For advanced users, note that
<code>require-system</code> calls <code>load-system</code>
with keyword arguments <code>:force-not (already-loaded-systems)</code>.
<code>already-loaded-systems</code> returns a list of the names of loaded systems.
<code>load-system</code> applies <code>operate</code> with the operation from
<code>*load-system-operation*</code> (which by default is <code>load-op</code>),
the system, and any provided keyword arguments.
</p>




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cl-asdf 2:3.1.4-1 / usr / share / doc / cl-asdf / asdf / Other-Operations.html
