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#17413

JavaScript

Execute a Unix Command with Node.js

// http://nodejs.org/api.html#_child_processes
var sys = require('sys')
var exec = require('child_process').exec;
var child;

// executes `pwd`
child = exec("pwd", function (error, stdout, stderr) {
  sys.print('stdout: ' + stdout);
  sys.print('stderr: ' + stderr);
  if (error !== null) {
    console.log('exec error: ' + error);
  }
});
https://snipt.net/embed/6c4d6a1dc081188cee3e0cfff64136c1/
https://snipt.net/raw/6c4d6a1dc081188cee3e0cfff64136c1/
6c4d6a1dc081188cee3e0cfff64136c1
js
JavaScript
14
2014-04-24T01:48:54
True
False
/api/public/snipt/17413/
execute-a-unix-command-with-nodejs
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a></pre></div></td><td class="code"><div class="highlight"><pre><span id="L-1"><a name="L-1"></a><span class="c1">// http://nodejs.org/api.html#_child_processes</span> </span><span id="L-2"><a name="L-2"></a><span class="kd">var</span> <span class="nx">sys</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;sys&#39;</span><span class="p">)</span> </span><span id="L-3"><a name="L-3"></a><span class="kd">var</span> <span class="nx">exec</span> <span class="o">=</span> <span class="nx">require</span><span class="p">(</span><span class="s1">&#39;child_process&#39;</span><span class="p">).</span><span class="nx">exec</span><span class="p">;</span> </span><span id="L-4"><a name="L-4"></a><span class="kd">var</span> <span class="nx">child</span><span class="p">;</span> </span><span id="L-5"><a name="L-5"></a> </span><span id="L-6"><a name="L-6"></a><span class="c1">// executes `pwd`</span> </span><span id="L-7"><a name="L-7"></a><span class="nx">child</span> <span class="o">=</span> <span class="nx">exec</span><span class="p">(</span><span class="s2">&quot;pwd&quot;</span><span class="p">,</span> <span class="kd">function</span> <span class="p">(</span><span class="nx">error</span><span class="p">,</span> <span class="nx">stdout</span><span class="p">,</span> <span class="nx">stderr</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-8"><a name="L-8"></a> <span class="nx">sys</span><span class="p">.</span><span class="nx">print</span><span class="p">(</span><span class="s1">&#39;stdout: &#39;</span> <span class="o">+</span> <span class="nx">stdout</span><span class="p">);</span> </span><span id="L-9"><a name="L-9"></a> <span class="nx">sys</span><span class="p">.</span><span class="nx">print</span><span class="p">(</span><span class="s1">&#39;stderr: &#39;</span> <span class="o">+</span> <span class="nx">stderr</span><span class="p">);</span> </span><span id="L-10"><a name="L-10"></a> <span class="k">if</span> <span class="p">(</span><span class="nx">error</span> <span class="o">!==</span> <span class="kc">null</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-11"><a name="L-11"></a> <span class="nx">console</span><span class="p">.</span><span class="nx">log</span><span class="p">(</span><span class="s1">&#39;exec error: &#39;</span> <span class="o">+</span> <span class="nx">error</span><span class="p">);</span> </span><span id="L-12"><a name="L-12"></a> <span class="p">}</span> </span><span id="L-13"><a name="L-13"></a><span class="p">});</span> </span></pre></div> </td></tr></table>
node.js, shell, unix