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3.0.5-SNAPSHOT
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<li class="toctree-l3"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/save-log.md">log the output</a></li>
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<li class="toctree-l3"><a class="reference external" href="https://github.com/alibaba/arthas/issues/11">how to use ognl</a></li>
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<div class="section" id="advanced-usage">
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<span id="advanced-usage"></span><h1>Advanced Usage<a class="headerlink" href="#advanced-usage" title="Permalink to this headline">¶</a></h1>
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<div class="section" id="basic">
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<span id="basic"></span><h2>Basic<a class="headerlink" href="#basic" title="Permalink to this headline">¶</a></h2>
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<ul class="simple">
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<li>help</li>
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<li>cls - clear out the current screen</li>
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<li>session - check details of the current session</li>
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/reset.md">reset</a> - reset all empowered classes</li>
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<li>version - print the version of the Arthas attaching to the current target process</li>
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<li>quit/exit - exit the current Arthas client without affecting other clients</li>
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<li>shutdown - terminate the Arthas server and all clients</li>
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</ul>
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</div>
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<div class="section" id="jvm-related">
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<span id="jvm-related"></span><h2>JVM-related<a class="headerlink" href="#jvm-related" title="Permalink to this headline">¶</a></h2>
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<ul class="simple">
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<li><a class="reference internal" href="dashboard.html"><span class="doc">dashboard</span></a> - real-time dashboard for the current system</li>
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<li><a class="reference internal" href="thread.html"><span class="doc">thread</span></a> - thread profile</li>
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<li><a class="reference internal" href="jvm.html"><span class="doc">jvm</span></a> - JVM profile</li>
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<li><a class="reference internal" href="sysprop.html"><span class="doc">sysprop</span></a> - check or modify JVM system properties</li>
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<li><strong>New!</strong> <a class="reference internal" href="getstatic.html"><span class="doc">getstatic</span></a> - check the static properties of some class</li>
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</ul>
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</div>
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<div class="section" id="class-classloader-related">
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<span id="class-classloader-related"></span><h2>class/classloader - related<a class="headerlink" href="#class-classloader-related" title="Permalink to this headline">¶</a></h2>
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<ul class="simple">
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<li><a class="reference internal" href="sc.html"><span class="doc">sc</span></a> - methods’ profile of the classes loaded by JVM</li>
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<li><a class="reference internal" href="sm.html"><span class="doc">sm</span></a> - methods’ profile of the loaded classes</li>
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<li><a class="reference internal" href="dump.html"><span class="doc">dump</span></a> - dump out the byte code of the loaded class to specified location</li>
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/redefine.md">redefine</a> - load external <code class="docutils literal notranslate"><span class="pre">*.class</span></code> files and re-define the JVM</li>
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<li><a class="reference internal" href="jad.html"><span class="doc">jad</span></a> - de-compile the specified loaded classes</li>
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<li><a class="reference internal" href="classloader.html"><span class="doc">classloader</span></a> - check the inheritance structure, urls, class loading info of class cloader; using classloader to getResource</li>
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</ul>
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</div>
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<div class="section" id="monitor-watch-trace-related">
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<span id="monitor-watch-trace-related"></span><h2>monitor/watch/trace - related<a class="headerlink" href="#monitor-watch-trace-related" title="Permalink to this headline">¶</a></h2>
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<blockquote>
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<div><strong>Attention</strong>: commands here are taking advantage of <code class="docutils literal notranslate"><span class="pre">byte</span> <span class="pre">code</span> <span class="pre">injection</span></code>, which means we are using <a class="reference external" href="https://en.wikipedia.org/wiki/Aspect-oriented_programming">AOP</a> to monitor and analyze the classes. So when using it for online troubleshooting, you’d better <em>explicitly specifically</em> specify the classes and also remember to remove the injected code by <code class="docutils literal notranslate"><span class="pre">shutdown</span></code> or <code class="docutils literal notranslate"><span class="pre">reset</span></code> (for specific classes).</div></blockquote>
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<ul class="simple">
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/monitor.md">monitor</a></li>
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/watch.md">watch</a></li>
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/trace.md">trace</a> - track the call stack trace and collect the time cost for each method call</li>
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/stack.md">stack</a> - print the call stack trace of the current method</li>
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/tt.md">tt</a> - record the arguments and returned value for the methods, history included</li>
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</ul>
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</div>
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<div class="section" id="options">
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<span id="options"></span><h2>options<a class="headerlink" href="#options" title="Permalink to this headline">¶</a></h2>
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<ul class="simple">
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<li><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/options.md">options</a> - check or set Arthas global options</li>
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</ul>
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</div>
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<div class="section" id="pipe">
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<span id="pipe"></span><h2>pipe<a class="headerlink" href="#pipe" title="Permalink to this headline">¶</a></h2>
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<p><code class="docutils literal notranslate"><span class="pre">pipe</span></code> is supported in Arthas, e.g. <code class="docutils literal notranslate"><span class="pre">sm</span> <span class="pre">org.apache.log4j.Logger</span> <span class="pre">|</span> <span class="pre">grep</span> <span class="pre"><init></span></code></p>
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<ul class="simple">
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<li>grep</li>
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<li>plaintext - remove the color</li>
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<li>wc</li>
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</ul>
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</div>
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<div class="section" id="async-in-background">
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<span id="async-in-background"></span><h2>async in background<a class="headerlink" href="#async-in-background" title="Permalink to this headline">¶</a></h2>
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<p><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/async.md">async</a> will be a great help, when the <code class="docutils literal notranslate"><span class="pre">incident</span></code> seldom occurs and you are <code class="docutils literal notranslate"><span class="pre">[watch](watch.md)</span></code>ing it.</p>
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<ul class="simple">
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<li>jobs - list all jobs</li>
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<li>kill - forcibly terminate the job</li>
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<li>fg - bring the paused job back to the front</li>
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<li>bg - put the paused job to the background</li>
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<li>tips - a) use <code class="docutils literal notranslate"><span class="pre">></span></code> to redirect the output; b) use <code class="docutils literal notranslate"><span class="pre">&</span></code> to put the job to the background; c) disconnecting the session will not influence the job (the default life is 1 day)</li>
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</ul>
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</div>
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<div class="section" id="web-console">
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<span id="web-console"></span><h2>Web Console<a class="headerlink" href="#web-console" title="Permalink to this headline">¶</a></h2>
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<p>Using websocket to connect Arthas</p>
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<div class="toctree-wrapper compound">
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<ul>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/web-console.md">Web Console</a></li>
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</ul>
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</div>
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</div>
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<div class="section" id="others">
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<span id="others"></span><h2>Others<a class="headerlink" href="#others" title="Permalink to this headline">¶</a></h2>
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<div class="toctree-wrapper compound">
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<ul>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/save-log.md">log the output</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/tree/master/site/src/site/sphinx/en/batch-support.md">batch</a></li>
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<li class="toctree-l1"><a class="reference external" href="https://github.com/alibaba/arthas/issues/11">how to use ognl</a></li>
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</ul>
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