title: How do I call the split function in awk to split a string on "\."?
body: <p>How do I use  the <code>split</code> function to split by "\."?</p>
  
  <p>For example, first consider splitting by <code>:</code>:</p>
  
  <pre><code>echo "03:26:12" | awk '{split($0,a,":"); print a[3] a[2] a[1]}'
  </code></pre>
  
  <p>Which produces this output:</p>
  
  <pre><code>122603
  </code></pre>
  
  <p>But if the incoming string is instead:</p>
  
  <pre><code>echo "03\.26\.12" | awk '{split($0,a,???); print a[3] a[2] a[1]}'
  </code></pre>
  
  <p>With desired output:</p>
  
  <pre><code>122603
  </code></pre>
  
  <p>What should the <code>???</code> be?</p>