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<div class="section" id="">
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<span id="id1"></span><h1>批处理功能<a class="headerlink" href="#" title="永久链接至标题">¶</a></h1>
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<blockquote>
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<div>通过批处理功能，arthas支持一次性批量运行多个命令，并取得命令执行的结果。</div></blockquote>
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<div class="section" id="">
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<span id="id2"></span><h2>使用方法<a class="headerlink" href="#" title="永久链接至标题">¶</a></h2>
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<div class="section" id="">
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<span id="id3"></span><h3>第一步： 创建你的批处理脚本<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
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<p>这里我们新建了一个<code class="docutils literal notranslate"><span class="pre">test.as</span></code>脚本，为了规范，我们采用了.as后缀名，但事实上任意的本文文件都ok。</p>
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<blockquote>
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<div><p>注意事项</p>
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<ul class="simple">
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<li>目前需要每个命令占一行</li>
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<li>dashboard务必开启批处理模式(<code class="docutils literal notranslate"><span class="pre">-b</span></code>)，指定执行次数(<code class="docutils literal notranslate"><span class="pre">-n</span></code>)，否则会导致批处理脚本无法终止</li>
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<li>watch/tt/trace/monitor/stack等命令务必指定执行次数(<code class="docutils literal notranslate"><span class="pre">-n</span></code>)，否则会导致批处理脚本无法终止</li>
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<li>可以使用异步后台任务，如 <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>，让命令一直在后台运行，通过日志获取结果，<a class="reference internal" href="async.html"><span class="doc">获取更多异步任务的信息</span></a></li>
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</ul>
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</div></blockquote>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>➜ arthas git:(develop) cat /var/tmp/test.as
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help
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dashboard -b -n 1
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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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</div>
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<div class="section" id="">
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<span id="id4"></span><h3>第二步： 运行你的批处理脚本<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
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<p>通过<code class="docutils literal notranslate"><span class="pre">-b</span></code>开启批处理模式， <code class="docutils literal notranslate"><span class="pre">-f</span></code>执行脚本文件， 批处理脚本默认会输出到标准输出中，可以将结果重定向到文件中。</p>
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<div class="highlight-sh 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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</pre></div>
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<span id="id5"></span><h3>第三步： 查看运行结果<a class="headerlink" href="#" title="永久链接至标题">¶</a></h3>
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<div class="highlight-sh notranslate"><div class="highlight"><pre><span></span>cat test.out
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