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<time title="创建时间：2020-03-15 12:53:09 / 修改时间：16:41:26" itemprop="dateCreated datePublished" datetime="2020-03-15T12:53:09+08:00">2020-03-15</time>
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<p>firewall-cmd管理防火墙常用到的配置</p>
<h2 id="状态选项"><a href="#状态选项" class="headerlink" title="状态选项"></a>状态选项</h2><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">--state 返回并打印防火墙状态</span><br><span class="line">--reload 重新加载防火墙并保留状态信息</span><br><span class="line">--check-config 检查永久配置是否有错误</span><br><span class="line">--list-all-zones 列出为所有区域添加或启用的所有内容</span><br><span class="line">--list-all 列出为当前所在区域添加或启用的所有内容</span><br></pre></td></tr></table></figure>
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<p>你工作目录下的每一个文件都不外乎这两种状态：<strong>已跟踪</strong>或<strong>未跟踪</strong>。</p>
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<a href="/2019/04/20/js-prototype-chain/" class="post-title-link" itemprop="url">js原型与原型链的理解</a>
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<p>JavaScript 常被描述为一种基于原型的语言 (prototype-based language)——每个对象拥有一个<strong>原型对象</strong>，对象以其原型为模板、从原型继承方法和属性。<strong>原型对象</strong>也可能拥有原型，并从中继承方法和属性，一层一层、以此类推。这种关系常被称为原型链 (prototype chain)，它解释了为何一个对象会拥有定义在其他对象中的属性和方法。</p>
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<p>prototype 函数特有属性，指向<strong>原型对象</strong><br>__proto__ 对象属性，指向<strong>原型对象</strong><br>constructor 构造函数<br>instance 实例</p>
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<p>每个构造函数(constructor)都有一个指向<strong>原型对象</strong>的属性prototype，<strong>原型对象</strong>都包含一个指向构造函数(constructor)的指针，而实例(instance)都包含一个指向<strong>原型对象</strong>的属性__proto__ 。</p>
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<a href="/2019/04/20/linux-command-date/" class="post-title-link" itemprop="url">linux命令-系统时间相关修改</a>
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<time title="创建时间：2019-04-20 15:58:07" itemprop="dateCreated datePublished" datetime="2019-04-20T15:58:07+08:00">2019-04-20</time>
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<span class="post-meta-item-text">更新于</span>
<time title="修改时间：2020-03-15 00:16:32" itemprop="dateModified" datetime="2020-03-15T00:16:32+08:00">2020-03-15</time>
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<span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/linux/" itemprop="url" rel="index"><span itemprop="name">linux</span></a></span>
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<span itemprop="about" itemscope itemtype="http://schema.org/Thing"><a href="/categories/linux/命令/" itemprop="url" rel="index"><span itemprop="name">命令</span></a></span>
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