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node-red/packages/node_modules/@node-red/nodes/locales/zh-TW/function/90-exec.html
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<script type="text/x-red" data-help-name="exec">
<p>運行系統命令並返回其輸出</p>
<p>可以將節點配置爲等待命令完成或者在命令生成時發送其輸出</p>
<p>運行的命令可以在節點中配置也可以由收到的消息提供</p>
<h3>輸入</h3>
<dl class="message-properties">
<dt class="optional">payload <span class="property-type">字符串</span></dt>
<dd>如果這樣配置則將被附加到執行命令中</dd>
<dt class="optional">kill <span class="property-type">字符串</span></dt>
<dd>指定發送到現有的exec節點進程的kill信號類型</dd>
<dt class="optional">pid <span class="property-type">數值|字符串</span></dt>
<dd>要殺死的現有exec節點進程的進程ID</dd>
</dl>
<h3>輸出</h3>
<ol class="node-ports">
<li>標准輸出(stdout)
<dl class="message-properties">
<dt>payload <span class="property-type">字符串</span></dt>
<dd>命令的標准輸出</dd>
</dl>
<dl class="message-properties">
<dt>rc <span class="property-type">object</span></dt>
<dd>僅執行模式一個返回代碼對象的副本在端口3上也可用</dd>
</dl>
</li>
<li>標准error輸出(stderr)
<dl class="message-properties">
<dt>payload <span class="property-type">字符串</span></dt>
<dd>命令的標准錯誤輸出</dd>
</dl>
<dl class="message-properties">
<dt>rc <span class="property-type">object</span></dt>
<dd>僅執行模式一個返回代碼對象的副本在端口3上也可用</dd>
</dl>
</li>
<li>返回代碼
<dl class="message-properties">
<dt>payload <span class="property-type">object</span></dt>
<dd>一個包含返回代碼以及<code>message</code><code>signal</code></dd>
</dl>
</li>
</ol>
<h3>詳細</h3>
<p>默認情況下使用<code>exec</code>調調<code>{code0}</code></p>
<p>可選可以選擇使用<code>spawn</code>stdoutstderr<code>{code0}</code></p>
<p>錯誤可能會在第三個端口<code>msg.payload</code><code>message</code><code>signal</code></p>
<p>運行的命令是在節點內定義的帶有附加<code>msg.payload</code></p>
<p>帶空格的命令或參數應該用引號引起來<code>這是一個參數</code></p>
<p>返回的<code>有效荷載</code>通常是<i>字符串</i>類型除非檢測到非UTF8字符在這種情況下它會是<i>buffer</i></p>
<p>節點處于活動狀態時該節點的狀態圖標和PID將可見對此更改可以通過<code>Status</code></p>
<h4>殺死進程</h4>
<p>發送<code>msg.kill</code><code>msg.kill</code><code>SIGINT</code><code>SIGQUIT</code><code>SIGHUP</code><code>SIGTERM</code></p>
<p>如果節點有多個進程在運行則還必須設置<code>msg.pid</code>PID</p>
<p>如果<code>超時</code></p>
<p>提示如果運行Python應用程序則可能需要使用<code>-u</code></p>
</script>