title: Make Numbers in a specific column to have the same Length in BASH
body: <p>I need that all the numbers of column 4 to have 4 characters</p>
  
  <p>Input</p>
  
  <pre><code>AGAP4 2061 0.534207 917.0 0 0 1
  AGAP5 2061 0.536148 101.5 0 0 8
  AGBL1 3201 0.514214 917.9 0 0 2
  AGBL2 2709 0.444814 12.5 0 0 1
  </code></pre>
  
  <p>desired output</p>
  
  <pre><code>AGAP4 2061 0.534207 917.0 0 0 1
  AGAP5 2061 0.536148 101.5 0 0 8
  AGBL1 3201 0.514214 917.9 0 0 2
  AGBL2 2709 0.444814 12.50 0 0 1
  </code></pre>