title: sort strings in csh
body: <pre><code>set abc=( x1 y1 x2 y2 x21 y21 x22 y22 )
  set new=`echo $abc | sort -kn`
  echo $new
  </code></pre>
  
  <p>The above script gives me the same array.</p>
  
  <p>I expect</p>
  
  <pre><code>x1 x2 x21 x22 y1 y2 y21 y22
  </code></pre>
  
  <p>Where did I go wrong ?</p>