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<div class="section" id="options">
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<h1>options<a class="headerlink" href="#options" title="永久链接至标题">¶</a></h1>
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<blockquote>
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<div><p>全局开关</p>
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</div></blockquote>
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<table border="1" class="docutils">
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<thead>
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<tr>
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<th>名称</th>
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<th>默认值</th>
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<th>描述</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td>unsafe</td>
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<td>false</td>
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<td>是否支持对系统级别的类进行增强，打开该开关可能导致把JVM搞挂，请慎重选择！</td>
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</tr>
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<tr>
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<td>dump</td>
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<td>false</td>
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<td>是否支持被增强了的类dump到外部文件中，如果打开开关，class文件会被dump到<code>/${application working dir}/arthas-class-dump/</code>目录下，具体位置详见控制台输出</td>
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</tr>
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<tr>
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<td>batch-re-transform</td>
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<td>true</td>
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<td>是否支持批量对匹配到的类执行retransform操作</td>
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</tr>
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<tr>
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<td>json-format</td>
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<td>false</td>
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<td>是否支持json化的输出</td>
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</tr>
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<tr>
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<td>disable-sub-class</td>
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<td>false</td>
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<td>是否禁用子类匹配，默认在匹配目标类的时候会默认匹配到其子类，如果想精确匹配，可以关闭此开关</td>
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</tr>
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<tr>
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<td>support-default-method</td>
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<td>true</td>
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<td>是否支持匹配到default method，默认会查找interface，匹配里面的default method。参考 <a href="https://github.com/alibaba/arthas/issues/1105">#1105</a></td>
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</tr>
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<tr>
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<td>save-result</td>
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<td>false</td>
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<td>是否打开执行结果存日志功能，打开之后所有命令的运行结果都将保存到<code>~/logs/arthas-cache/result.log</code>中</td>
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</tr>
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<tr>
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<td>job-timeout</td>
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<td>1d</td>
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<td>异步后台任务的默认超时时间，超过这个时间，任务自动停止；比如设置 1d, 2h, 3m, 25s，分别代表天、小时、分、秒</td>
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</tr>
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<tr>
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<td>print-parent-fields</td>
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<td>true</td>
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<td>是否打印在parent class里的filed</td>
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</tr>
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</tbody>
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</table><div class="section" id="id1">
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<h2>查看所有的options<a class="headerlink" href="#id1" title="永久链接至标题">¶</a></h2>
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<div class="highlight-bash notranslate"><div class="highlight hljs"><pre class="bash">$ options
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LEVEL TYPE NAME VALUE SUMMARY DESCRIPTION
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--------------------------------------------------------------------------------------------
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0 bool unsafe false Option to support This option enables to proxy function
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ean system-level class ality of JVM classes. Due to serious
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security risk a JVM crash is possibly
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be introduced. Do not activate it un
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less you are able to manage.
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1 bool dump false Option to dump the This option enables the enhanced clas
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ean enhanced classes ses to be dumped to external file for
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further de-compilation and analysis.
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1 bool batch-re-tr true Option to support This options enables to reTransform c
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ean ansform batch reTransform lasses with batch mode.
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Class
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2 bool json-format false Option to support This option enables to format object
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ean JSON format of obj output with JSON when -x option selec
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ect output ted.
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1 bool disable-sub false Option to control This option disable to include sub cl
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ean -class include sub class ass when matching class.
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when class matchin
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g
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1 bool save-result false Option to print co This option enables to save each comm
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ean mmand's result to and's result to log file, which path
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log file is ${user.home}/logs/arthas-cache/res
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ult.log.
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2 Stri job-timeout 1d Option to job time This option setting job timeout,The u
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ng out nit can be d, h, m, s for day, hour,
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minute, second. 1d is one day in defa
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ult
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1 bool print-paren true Option to print al This option enables print files in pa
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ean t-fields l fileds in parent rent class, default value true.
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class</pre></div>
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</div>
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</div>
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<div class="section" id="option">
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<h2>获取option的值<a class="headerlink" href="#option" title="永久链接至标题">¶</a></h2>
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<div class="highlight-default notranslate"><pre class="literal-block">$ options json-format
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LEVEL TYPE NAME VALUE SUMMARY DESCRIPTION
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--------------------------------------------------------------------------------------------
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2 bool json-format false Option to support This option enables to format object
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ean JSON format of obj output with JSON when -x option selec
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ect output ted.</pre>
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</div>
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<blockquote>
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<div><p>默认情况下<code class="docutils literal notranslate"><span class="pre">json-format</span></code>为false，如果希望<code class="docutils literal notranslate"><span class="pre">watch</span></code>/<code class="docutils literal notranslate"><span class="pre">tt</span></code>等命令结果以json格式输出，则可以设置<code class="docutils literal notranslate"><span class="pre">json-format</span></code>为true。</p>
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</div></blockquote>
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</div>
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<div class="section" id="id2">
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<h2>设置指定的option<a class="headerlink" href="#id2" title="永久链接至标题">¶</a></h2>
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<p>例如，想打开执行结果存日志功能，输入如下命令即可：</p>
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<div class="highlight-default notranslate"><pre class="literal-block">$ 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</pre>
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</div>
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