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<div class="section" id="log-command-outputs">
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<h1>Log command outputs<a class="headerlink" href="#log-command-outputs" title="Permalink to this headline">¶</a></h1>
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<blockquote>
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<div><p>Log command outputs for later analysis</p>
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</div></blockquote>
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<ul>
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<li><p>By default, this behavior is turned off. To enable it, execute the command below:</p>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ options save-result true
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NAME BEFORE-VALUE AFTER-VALUE
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----------------------------------------
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save-result false true
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Affect(row-cnt:1) cost in 3 ms.</pre></div>
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<p>If the message above is output on the console, then this behavior is enabled successfully.</p>
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</li>
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<li><p>Log file path</p>
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<p>The command execution result will be save in <code class="docutils literal notranslate"><span class="pre">{user.home}/logs/arthas-cache/result.log</span></code>. Pls. clean it up regularly to save disk space.</p>
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<div class="section" id="use-asynchronous-job-to-log">
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<h2>Use asynchronous job to log<a class="headerlink" href="#use-asynchronous-job-to-log" title="Permalink to this headline">¶</a></h2>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ trace Test t >> &
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job id : 2
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cache location : /Users/zhuyong/logs/arthas-cache/28198/2</pre></div>
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</div>
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<p>By doing this, the command will run at background asynchronously, and output the execution result into <code class="docutils literal notranslate"><span class="pre">~/logs/arthas-cache/{PID}/{JobId}</span></code>:</p>
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<li><p>The background job will continue to run even if the current session is disconnected. The default job timeout value is 1 day, use global ‘<a class="reference internal" href="options.html"><span class="doc">options</span></a>’ command to alternate it.</p></li>
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<li><p>The execution result will be output into the file asynchronously. Pls. note the behavior of this command is not controlled by <code class="docutils literal notranslate"><span class="pre">save-result</span></code> option from global <a class="reference internal" href="options.html"><span class="doc">options</span></a>. No matter <code class="docutils literal notranslate"><span class="pre">save-result</span></code> is set to <code class="docutils literal notranslate"><span class="pre">true</span></code> or not, this command will write into <code class="docutils literal notranslate"><span class="pre">~/logs/arthas-cache/{PID}/{JobId}</span></code> anyway, instead of into <code class="docutils literal notranslate"><span class="pre">~/logs/arthas-cache/result.log</span></code>.</p></li>
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