title: piping seq to printf for number formatting
body: <p>I'm trying to print the following pattern using printf and seq:</p>
  
  <pre><code>0000
  0001
  0002
  0003
  </code></pre>
  
  <p>My problem is once I use:</p>
  
  <pre><code>seq 0 10 | xargs printf %04d
  </code></pre>
  
  <p>all my output is formatted into the same line likeso:</p>
  
  <pre><code>0000000100020003
  </code></pre>
  
  <p>I still can't get the hang of using xargs. How do I use it correctly in this case?</p>