title: Chop 4 sides of image with Imagemagick
body: <p>I have the following image:</p>
  
  <pre><code>test PNG 1366x655 1366x655+0+0 8-bit sRGB 286KB 0.000u 0:00.000
  </code></pre>
  
  <p>and I need to chop it like this from the border of the image:</p>
  
  <pre><code>top: 140 px
  bottom: 140 px
  left: 180 px
  right: 60 px
  </code></pre>
  
  <p>Is there a one-line command line to do this with <code>convert</code>?</p>