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<div class="section" id="batch-processing">
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<span id="batch-processing"></span><h1>Batch Processing<a class="headerlink" href="#batch-processing" title="Permalink to this headline">¶</a></h1>
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<p>With the help of Batch Processing, you can run multiple commands in batch and get the final result at the end.</p>
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<div class="section" id="usage">
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<span id="usage"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
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<div class="section" id="step-1-create-the-script">
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<span id="step-1-create-the-script"></span><h3>Step 1: Create the script<a class="headerlink" href="#step-1-create-the-script" title="Permalink to this headline">¶</a></h3>
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<p>Create a <code class="docutils literal notranslate"><span class="pre">test.as</span></code> script suffixed with <code class="docutils literal notranslate"><span class="pre">as</span></code>. Here <code class="docutils literal notranslate"><span class="pre">as</span></code> is suggested for the suffix of the filename, but in fact any suffix is acceptable.</p>
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<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>➜ arthas git:<span class="o">(</span>develop<span class="o">)</span> cat /var/tmp/test.as
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<span class="nb">help</span>
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dashboard -b -n <span class="m">1</span>
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session
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thread
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sc -d org.apache.commons.lang.StringUtils
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</pre></div>
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</div>
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<p>Note:</p>
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<ul class="simple">
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<li>Each command takes one line.</li>
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<li>Batch mode (via <code class="docutils literal notranslate"><span class="pre">-b</span></code>) and execution times (via <code class="docutils literal notranslate"><span class="pre">-n</span></code>) must be explicitly specified for <code class="docutils literal notranslate"><span class="pre">dashboard</span></code>, otherwise batch script cannot terminate.</li>
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<li>Commands such as <code class="docutils literal notranslate"><span class="pre">watch</span></code>/<code class="docutils literal notranslate"><span class="pre">tt</span></code>/<code class="docutils literal notranslate"><span class="pre">trace</span></code>/<code class="docutils literal notranslate"><span class="pre">monitor</span></code>/<code class="docutils literal notranslate"><span class="pre">stack</span></code> should include <code class="docutils literal notranslate"><span class="pre">-n</span></code> option to ensure the script can be able to quit.</li>
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<li>Also consider to use <code class="docutils literal notranslate"><span class="pre">async</span></code> (for example: <code class="docutils literal notranslate"><span class="pre">watch</span> <span class="pre">c.t.X</span> <span class="pre">test</span> <span class="pre">returnObj</span> <span class="pre">></span> <span class="pre">&</span></code>) to put commands run at background and get the output from the log file, see more from <a class="reference internal" href="async.html"><span class="doc">asynchronous job</span></a></li>
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</ul>
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</div>
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<div class="section" id="step-2-run-the-script">
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<span id="step-2-run-the-script"></span><h3>Step 2: Run the script<a class="headerlink" href="#step-2-run-the-script" title="Permalink to this headline">¶</a></h3>
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<p>Use <code class="docutils literal notranslate"><span class="pre">-b</span></code> to turn on batch mode, and use <code class="docutils literal notranslate"><span class="pre">-f</span></code> to specify the script file. By default the result will be output to the standard output, but you can redirect the output to the file like this:</p>
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<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>./as.sh -b -f /var/tmp/test.as <span class="m">56328</span> > test.out
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<div class="section" id="step-3-check-the-outputs">
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<span id="step-3-check-the-outputs"></span><h3>Step 3: Check the outputs<a class="headerlink" href="#step-3-check-the-outputs" title="Permalink to this headline">¶</a></h3>
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<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>cat test.out
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</pre></div>
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