title: How can I write this regular expression
body: <p>I have a file structure like this</p>
  
  <pre><code>var1=12.785, blah blah variable2=45.654 blih blah F=0.454
  var1=852.785, blah blah var2=45.654 // blih blah FGT=8738
  var1=12.785, blah blah DGSTE=4583; blih blah TEST=473.6984
  var1=12.785, blah blah var2=45.654 blih blah var3=48834
  </code></pre>
  
  <p>I would like a regex that would give me only the numbers after the `= sign</p>
  
  <pre><code>12.785,45.654,0.454
  852.785,45.654,8738
  12.785,4583,473.6984
  12.785,45.654,48834
  </code></pre>
  
  <p>(Basically the variable=number structure holds)
  Can you help on this ?
  I am using GNU grep and sed (but have other tolls too)</p>